-FD_CLR sys_select.h pselect, select - synchronous I/O multiplexing
-FD_ISSET sys_select.h pselect, select - synchronous I/O multiplexing
-FD_SET sys_select.h pselect, select - synchronous I/O multiplexing
-FD_ZERO sys_select.h pselect, select - synchronous I/O multiplexing
-_Exit stdlib.h unistd.h _Exit, _exit - terminate a process
-_exit stdlib.h unistd.h _Exit, _exit - terminate a process
-_longjmp setjmp.h OB XSI _longjmp, _setjmp - non-local goto
-_setjmp setjmp.h OB XSI _longjmp, _setjmp - non-local goto
-_tolower ctype.h OB XSI _tolower - transliterate uppercase characters to lowercase
-_toupper ctype.h OB XSI _toupper - transliterate lowercase characters to uppercase
-a64l stdlib.h XSI a64l, l64a - convert between a 32-bit integer and a radix-64 ASCII string
-abort stdlib.h abort - generate an abnormal process abort
-abs stdlib.h abs - return an integer absolute value
-accept sys_socket.h accept - accept a new connection on a socket
-access unistd.h access, faccessat - determine accessibility of a file relative to directory file descriptor
-acos math.h acos, acosf, acosl - arc cosine functions
-acosf math.h acos, acosf, acosl - arc cosine functions
-acosh math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions
-acoshf math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions
-acoshl math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions
-acosl math.h acos, acosf, acosl - arc cosine functions
-aio_cancel aio.h aio_cancel - cancel an asynchronous I/O request
-aio_error aio.h aio_error - retrieve errors status for an asynchronous I/O operation
-aio_fsync aio.h aio_fsync - asynchronous file synchronization
-aio_read aio.h aio_read - asynchronous read from a file
-aio_return aio.h aio_return - retrieve return status of an asynchronous I/O operation
-aio_suspend aio.h aio_suspend - wait for an asynchronous I/O request
-aio_write aio.h aio_write - asynchronous write to a file
-alarm unistd.h alarm - schedule an alarm signal
-alphasort dirent.h alphasort, scandir - scan a directory
-asctime time.h OB OB CX asctime, asctime_r - convert date and time to a string
-asctime_r time.h OB OB CX asctime, asctime_r - convert date and time to a string
-asin math.h asin, asinf, asinl - arc sine function
-asinf math.h asin, asinf, asinl - arc sine function
-asinh math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions
-asinhf math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions
-asinhl math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions
-asinl math.h asin, asinf, asinl - arc sine function
-assert assert.h assert - insert program diagnostics
-atan math.h atan, atanf, atanl - arc tangent function
-atan2 math.h atan2, atan2f, atan2l - arc tangent functions
-atan2f math.h atan2, atan2f, atan2l - arc tangent functions
-atan2l math.h atan2, atan2f, atan2l - arc tangent functions
-atanf math.h atan, atanf, atanl - arc tangent function
-atanh math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions
-atanhf math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions
-atanhl math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions
-atanl math.h atan, atanf, atanl - arc tangent function
-atexit stdlib.h atexit - register a function to run at process termination
-atof stdlib.h atof - convert a string to a double-precision number
-atoi stdlib.h atoi - convert a string to an integer
-atol stdlib.h atol, atoll - convert a string to a long integer
-atoll stdlib.h atol, atoll - convert a string to a long integer
-basename libgen.h XSI basename - return the last component of a pathname
-bind sys_socket.h bind - bind a name to a socket
-bsearch stdlib.h bsearch - binary search a sorted table
-btowc stdio.h wchar.h btowc - single byte to wide character conversion
-cabs complex.h cabs, cabsf, cabsl - return a complex absolute value
-cabsf complex.h cabs, cabsf, cabsl - return a complex absolute value
-cabsl complex.h cabs, cabsf, cabsl - return a complex absolute value
-cacos complex.h cacos, cacosf, cacosl - complex arc cosine functions
-cacosf complex.h cacos, cacosf, cacosl - complex arc cosine functions
-cacosh complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions
-cacoshf complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions
-cacoshl complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions
-cacosl complex.h cacos, cacosf, cacosl - complex arc cosine functions
-calloc stdlib.h calloc - a memory allocator
-carg complex.h carg, cargf, cargl - complex argument functions
-cargf complex.h carg, cargf, cargl - complex argument functions
-cargl complex.h carg, cargf, cargl - complex argument functions
-casin complex.h casin, casinf, casinl - complex arc sine functions
-casinf complex.h casin, casinf, casinl - complex arc sine functions
-casinh complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions
-casinhf complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions
-casinhl complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions
-casinl complex.h casin, casinf, casinl - complex arc sine functions
-catan complex.h catan, catanf, catanl - complex arc tangent functions
-catanf complex.h catan, catanf, catanl - complex arc tangent functions
-catanh complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions
-catanhf complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions
-catanhl complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions
-catanl complex.h catan, catanf, catanl - complex arc tangent functions
-catclose nl_types.h catclose - close a message catalog descriptor
-catgets nl_types.h catgets - read a program message
-catopen nl_types.h catopen - open a message catalog
-cbrt math.h cbrt, cbrtf, cbrtl - cube root functions
-cbrtf math.h cbrt, cbrtf, cbrtl - cube root functions
-cbrtl math.h cbrt, cbrtf, cbrtl - cube root functions
-ccos complex.h ccos, ccosf, ccosl - complex cosine functions
-ccosf complex.h ccos, ccosf, ccosl - complex cosine functions
-ccosh complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions
-ccoshf complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions
-ccoshl complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions
-ccosl complex.h ccos, ccosf, ccosl - complex cosine functions
-ceil math.h ceil, ceilf, ceill - ceiling value function
-ceilf math.h ceil, ceilf, ceill - ceiling value function
-ceill math.h ceil, ceilf, ceill - ceiling value function
-cexp complex.h cexp, cexpf, cexpl - complex exponential functions
-cexpf complex.h cexp, cexpf, cexpl - complex exponential functions
-cexpl complex.h cexp, cexpf, cexpl - complex exponential functions
-cfgetispeed termios.h cfgetispeed - get input baud rate
-cfgetospeed termios.h cfgetospeed - get output baud rate
-cfsetispeed termios.h cfsetispeed - set input baud rate
-cfsetospeed termios.h cfsetospeed - set output baud rate
-chdir unistd.h chdir - change working directory
-chmod sys_stat.h chmod, fchmodat - change mode of a file relative to directory file descriptor
-chown unistd.h chown, fchownat - change owner and group of a file relative to directory file descriptor
-cimag complex.h cimag, cimagf, cimagl - complex imaginary functions
-cimagf complex.h cimag, cimagf, cimagl - complex imaginary functions
-cimagl complex.h cimag, cimagf, cimagl - complex imaginary functions
-clearerr stdio.h clearerr - clear indicators on a stream
-clock time.h clock - report CPU time used
-clock_getcpuclockid time.h CPT clock_getcpuclockid - access a process CPU-time clock (<b>ADVANCED REALTIME</b>)
-clock_getres time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions
-clock_gettime time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions
-clock_nanosleep time.h CX clock_nanosleep - high resolution sleep with specifiable clock
-clock_settime time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions
-clog complex.h clog, clogf, clogl - complex natural logarithm functions
-clogf complex.h clog, clogf, clogl - complex natural logarithm functions
-clogl complex.h clog, clogf, clogl - complex natural logarithm functions
-close unistd.h close - close a file descriptor
-closedir dirent.h closedir - close a directory stream
-closelog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log
-confstr unistd.h confstr - get configurable variables
-conj complex.h conj, conjf, conjl - complex conjugate functions
-conjf complex.h conj, conjf, conjl - complex conjugate functions
-conjl complex.h conj, conjf, conjl - complex conjugate functions
-connect sys_socket.h connect - connect a socket
-copysign math.h copysign, copysignf, copysignl - number manipulation function
-copysignf math.h copysign, copysignf, copysignl - number manipulation function
-copysignl math.h copysign, copysignf, copysignl - number manipulation function
-cos math.h cos, cosf, cosl - cosine function
-cosf math.h cos, cosf, cosl - cosine function
-cosh math.h cosh, coshf, coshl - hyperbolic cosine functions
-coshf math.h cosh, coshf, coshl - hyperbolic cosine functions
-coshl math.h cosh, coshf, coshl - hyperbolic cosine functions
-cosl math.h cos, cosf, cosl - cosine function
-cpow complex.h cpow, cpowf, cpowl - complex power functions
-cpowf complex.h cpow, cpowf, cpowl - complex power functions
-cpowl complex.h cpow, cpowf, cpowl - complex power functions
-cproj complex.h cproj, cprojf, cprojl - complex projection functions
-cprojf complex.h cproj, cprojf, cprojl - complex projection functions
-cprojl complex.h cproj, cprojf, cprojl - complex projection functions
-creal complex.h creal, crealf, creall - complex real functions
-crealf complex.h creal, crealf, creall - complex real functions
-creall complex.h creal, crealf, creall - complex real functions
-creat sys/stat.h fcntl.h OH creat - create a new file or rewrite an existing one
-crypt unistd.h XSI crypt - string encoding function (<b>CRYPT</b>)
-csin complex.h csin, csinf, csinl - complex sine functions
-csinf complex.h csin, csinf, csinl - complex sine functions
-csinh complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions
-csinhf complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions
-csinhl complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions
-csinl complex.h csin, csinf, csinl - complex sine functions
-csqrt complex.h csqrt, csqrtf, csqrtl - complex square root functions
-csqrtf complex.h csqrt, csqrtf, csqrtl - complex square root functions
-csqrtl complex.h csqrt, csqrtf, csqrtl - complex square root functions
-ctan complex.h ctan, ctanf, ctanl - complex tangent functions
-ctanf complex.h ctan, ctanf, ctanl - complex tangent functions
-ctanh complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions
-ctanhf complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions
-ctanhl complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions
-ctanl complex.h ctan, ctanf, ctanl - complex tangent functions
-ctermid stdio.h CX ctermid - generate a pathname for the controlling terminal
-ctime time.h OB OB CX ctime, ctime_r - convert a time value to a date and time string
-ctime_r time.h OB OB CX ctime, ctime_r - convert a time value to a date and time string
-daylight time.h XSI CX daylight, timezone, tzname, tzset - set timezone conversion information
-dbm_clearerr ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_close ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_delete ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_error ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_fetch ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_firstkey ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_nextkey ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_open ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-dbm_store ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions
-difftime time.h difftime - compute the difference between two calendar time values
-dirfd dirent.h dirfd - extract the file descriptor used by a DIR stream
-dirname libgen.h XSI dirname - report the parent directory name of a file pathname
-div stdlib.h div - compute the quotient and remainder of an integer division
-dlclose dlfcn.h dlclose - close a dlopen object
-dlerror dlfcn.h dlerror - get diagnostic information
-dlopen dlfcn.h dlopen - gain access to an executable object file
-dlsym dlfcn.h dlsym - obtain the address of a symbol from a dlopen object
-dprintf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output
-drand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-dup unistd.h dup, dup2 - duplicate an open file descriptor
-dup2 unistd.h dup, dup2 - duplicate an open file descriptor
-duplocale locale.h CX duplocale - duplicate a locale object
-encrypt unistd.h XSI encrypt - encoding function (<b>CRYPT</b>)
-endgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions
-endhostent netdb.h endhostent, gethostent, sethostent - network host database functions
-endnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
-endprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
-endpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions
-endservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions
-endutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-environ unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-erand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-erf math.h erf, erff, erfl - error functions
-erfc math.h erfc, erfcf, erfcl - complementary error functions
-erfcf math.h erfc, erfcf, erfcl - complementary error functions
-erfcl math.h erfc, erfcf, erfcl - complementary error functions
-erff math.h erf, erff, erfl - error functions
-erfl math.h erf, erff, erfl - error functions
-errno errno.h errno - error return value
-execl unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-execle unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-execlp unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-execv unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-execve unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-execvp unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-exit stdlib.h exit - terminate a process
-exp math.h exp, expf, expl - exponential function
-exp2 math.h exp2, exp2f, exp2l - exponential base 2 functions
-exp2f math.h exp2, exp2f, exp2l - exponential base 2 functions
-exp2l math.h exp2, exp2f, exp2l - exponential base 2 functions
-expf math.h exp, expf, expl - exponential function
-expl math.h exp, expf, expl - exponential function
-expm1 math.h expm1, expm1f, expm1l - compute exponential functions
-expm1f math.h expm1, expm1f, expm1l - compute exponential functions
-expm1l math.h expm1, expm1f, expm1l - compute exponential functions
-fabs math.h fabs, fabsf, fabsl - absolute value function
-fabsf math.h fabs, fabsf, fabsl - absolute value function
-fabsl math.h fabs, fabsf, fabsl - absolute value function
-faccessat unistd.h access, faccessat - determine accessibility of a file relative to directory file descriptor
-fchdir unistd.h fchdir - change working directory
-fchmod sys_stat.h fchmod - change mode of a file
-fchmodat sys_stat.h chmod, fchmodat - change mode of a file relative to directory file descriptor
-fchown unistd.h fchown - change owner and group of a file
-fchownat unistd.h chown, fchownat - change owner and group of a file relative to directory file descriptor
-fclose stdio.h fclose - close a stream
-fcntl fcntl.h fcntl - file control
-fdatasync unistd.h SIO fdatasync - synchronize the data of a file (<b>REALTIME</b>)
-fdim math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers
-fdimf math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers
-fdiml math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers
-fdopen stdio.h CX fdopen - associate a stream with a file descriptor
-fdopendir dirent.h fdopendir, opendir - open directory associated with file descriptor
-feclearexcept fenv.h feclearexcept - clear floating-point exception
-fegetenv fenv.h fegetenv, fesetenv - get and set current floating-point environment
-fegetexceptflag fenv.h fegetexceptflag, fesetexceptflag - get and set floating-point status flags
-fegetround fenv.h fegetround, fesetround - get and set current rounding direction
-feholdexcept fenv.h feholdexcept - save current floating-point environment
-feof stdio.h feof - test end-of-file indicator on a stream
-feraiseexcept fenv.h feraiseexcept - raise floating-point exception
-ferror stdio.h ferror - test error indicator on a stream
-fesetenv fenv.h fegetenv, fesetenv - get and set current floating-point environment
-fesetexceptflag fenv.h fegetexceptflag, fesetexceptflag - get and set floating-point status flags
-fesetround fenv.h fegetround, fesetround - get and set current rounding direction
-fetestexcept fenv.h fetestexcept - test floating-point exception flags
-feupdateenv fenv.h feupdateenv - update floating-point environment
-fexecve unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
-fflush stdio.h fflush - flush a stream
-ffs strings.h XSI ffs - find first set bit
-fgetc stdio.h fgetc - get a byte from a stream
-fgetpos stdio.h fgetpos - get current file position information
-fgets stdio.h fgets - get a string from a stream
-fgetwc stdio.h wchar.h fgetwc - get a wide-character code from a stream
-fgetws stdio.h wchar.h fgetws - get a wide-character string from a stream
-fileno stdio.h CX fileno - map a stream pointer to a file descriptor
-flockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions
-floor math.h floor, floorf, floorl - floor function
-floorf math.h floor, floorf, floorl - floor function
-floorl math.h floor, floorf, floorl - floor function
-fma math.h fma, fmaf, fmal - floating-point multiply-add
-fmaf math.h fma, fmaf, fmal - floating-point multiply-add
-fmal math.h fma, fmaf, fmal - floating-point multiply-add
-fmax math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers
-fmaxf math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers
-fmaxl math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers
-fmemopen stdio.h CX fmemopen - open a memory buffer stream
-fmin math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers
-fminf math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers
-fminl math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers
-fmod math.h fmod, fmodf, fmodl - floating-point remainder value function
-fmodf math.h fmod, fmodf, fmodl - floating-point remainder value function
-fmodl math.h fmod, fmodf, fmodl - floating-point remainder value function
-fmtmsg fmtmsg.h XSI fmtmsg - display a message in the specified format on standard error and/or a system console
-fnmatch fnmatch.h fnmatch - match a filename or a pathname
-fopen stdio.h fopen - open a stream
-fork unistd.h fork - create a new process
-fpathconf unistd.h fpathconf, pathconf - get configurable pathname variables
-fpclassify math.h fpclassify - classify real floating type
-fprintf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output
-fputc stdio.h fputc - put a byte on a stream
-fputs stdio.h fputs - put a string on a stream
-fputwc stdio.h wchar.h fputwc - put a wide-character code on a stream
-fputws stdio.h wchar.h fputws - put a wide-character string on a stream
-fread stdio.h fread - binary input
-free stdlib.h free - free allocated memory
-freeaddrinfo sys_socket.h netdb.h freeaddrinfo, getaddrinfo - get address information
-freelocale locale.h CX freelocale - free resources allocated for a locale object
-freopen stdio.h freopen - open a stream
-frexp math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number
-frexpf math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number
-frexpl math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number
-fscanf stdio.h fscanf, scanf, sscanf - convert formatted input
-fseek stdio.h CX fseek, fseeko - reposition a file-position indicator in a stream
-fseeko stdio.h CX fseek, fseeko - reposition a file-position indicator in a stream
-fsetpos stdio.h fsetpos - set current file position
-fstat sys_stat.h fstat - get file status
-fstatat sys_stat.h fstatat, lstat, stat - get file status
-fstatvfs sys_statvfs.h fstatvfs, statvfs - get file system information
-fsync unistd.h FSC fsync - synchronize changes to a file
-ftell stdio.h CX ftell, ftello - return a file offset in a stream
-ftello stdio.h CX ftell, ftello - return a file offset in a stream
-ftok sys_ipc.h XSI ftok - generate an IPC key
-ftruncate unistd.h ftruncate - truncate a file to a specified length
-ftrylockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions
-ftw ftw.h OB XSI ftw - traverse (walk) a file tree
-funlockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions
-futimens sys_stat.h sys_time.h XSI futimens, utimensat, utimes - set file access and modification times
-fwide stdio.h wchar.h fwide - set stream orientation
-fwprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output
-fwrite stdio.h fwrite - binary output
-fwscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input
-gai_strerror netdb.h gai_strerror - address and name information error description
-getaddrinfo sys_socket.h netdb.h freeaddrinfo, getaddrinfo - get address information
-getc stdio.h getc - get a byte from a stream
-getc_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking
-getchar stdio.h getchar - get a byte from a .I stdin stream
-getchar_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking
-getcwd unistd.h getcwd - get the pathname of the current working directory
-getdate time.h XSI getdate - convert user format date and time
-getdate_err time.h XSI getdate - convert user format date and time
-getdelim stdio.h CX getdelim, getline - read a delimited record from .I stream
-getegid unistd.h getegid - get the effective group ID
-getenv stdlib.h getenv - get value of an environment variable
-geteuid unistd.h geteuid - get the effective user ID
-getgid unistd.h getgid - get the real group ID
-getgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions
-getgrgid grp.h getgrgid, getgrgid_r - get group database entry for a group ID
-getgrgid_r grp.h getgrgid, getgrgid_r - get group database entry for a group ID
-getgrnam grp.h getgrnam, getgrnam_r - search group database for a name
-getgrnam_r grp.h getgrnam, getgrnam_r - search group database for a name
-getgroups unistd.h getgroups - get supplementary group IDs
-gethostent netdb.h endhostent, gethostent, sethostent - network host database functions
-gethostid unistd.h XSI gethostid - get an identifier for the current host
-gethostname unistd.h gethostname - get name of current host
-getitimer sys_time.h OB XSI getitimer, setitimer - get and set value of interval timer
-getline stdio.h CX getdelim, getline - read a delimited record from .I stream
-getlogin unistd.h getlogin, getlogin_r - get login name
-getlogin_r unistd.h getlogin, getlogin_r - get login name
-getnameinfo sys_socket.h netdb.h getnameinfo - get name information
-getnetbyaddr netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
-getnetbyname netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
-getnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
-getopt unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
-getpeername sys_socket.h getpeername - get the name of the peer socket
-getpgid unistd.h getpgid - get the process group ID for a process
-getpgrp unistd.h getpgrp - get the process group ID of the calling process
-getpid unistd.h getpid - get the process ID
-getppid unistd.h getppid - get the parent process ID
-getpriority sys_resource.h XSI getpriority, setpriority - get and set the nice value
-getprotobyname netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
-getprotobynumber netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
-getprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
-getpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions
-getpwnam pwd.h getpwnam, getpwnam_r - search user database for a name
-getpwnam_r pwd.h getpwnam, getpwnam_r - search user database for a name
-getpwuid pwd.h getpwuid, getpwuid_r - search user database for a user ID
-getpwuid_r pwd.h getpwuid, getpwuid_r - search user database for a user ID
-getrlimit sys_resource.h XSI getrlimit, setrlimit - control maximum resource consumption
-getrusage sys_resource.h XSI getrusage - get information about resource utilization
-gets stdio.h OB gets - get a string from a .I stdin stream
-getservbyname netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions
-getservbyport netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions
-getservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions
-getsid unistd.h getsid - get the process group ID of a session leader
-getsockname sys_socket.h getsockname - get the socket name
-getsockopt sys_socket.h getsockopt - get the socket options
-getsubopt stdlib.h getsubopt - parse suboption arguments from a string
-gettimeofday sys_time.h OB XSI gettimeofday - get the date and time
-getuid unistd.h getuid - get a real user ID
-getutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-getutxid utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-getutxline utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-getwc stdio.h wchar.h getwc - get a wide character from a stream
-getwchar wchar.h getwchar - get a wide character from a .I stdin stream
-glob glob.h glob, globfree - generate pathnames matching a pattern
-globfree glob.h glob, globfree - generate pathnames matching a pattern
-gmtime time.h CX gmtime, gmtime_r - convert a time value to a broken-down UTC time
-gmtime_r time.h CX gmtime, gmtime_r - convert a time value to a broken-down UTC time
-grantpt stdlib.h XSI grantpt - grant access to the slave pseudo-terminal device
-hcreate search.h XSI hcreate, hdestroy, hsearch - manage hash search table
-hdestroy search.h XSI hcreate, hdestroy, hsearch - manage hash search table
-hsearch search.h XSI hcreate, hdestroy, hsearch - manage hash search table
-htonl arpa_inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order
-htons arpa_inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order
-hypot math.h hypot, hypotf, hypotl - Euclidean distance function
-hypotf math.h hypot, hypotf, hypotl - Euclidean distance function
-hypotl math.h hypot, hypotf, hypotl - Euclidean distance function
-iconv iconv.h iconv - codeset conversion function
-iconv_close iconv.h iconv_close - codeset conversion deallocation function
-iconv_open iconv.h iconv_open - codeset conversion allocation function
-if_freenameindex net_if.h if_freenameindex - free memory allocated by if_nameindex
-if_indextoname net_if.h if_indextoname - map a network interface index to its corresponding name
-if_nameindex net_if.h if_nameindex - return all network interface names and indexes
-if_nametoindex net_if.h if_nametoindex - map a network interface name to its corresponding index
-ilogb math.h ilogb, ilogbf, ilogbl - return an unbiased exponent
-ilogbf math.h ilogb, ilogbf, ilogbl - return an unbiased exponent
-ilogbl math.h ilogb, ilogbf, ilogbl - return an unbiased exponent
-imaxabs inttypes.h imaxabs - return absolute value
-imaxdiv inttypes.h imaxdiv - return quotient and remainder
-inet_addr arpa_inet.h inet_addr, inet_ntoa - IPv4 address manipulation
-inet_ntoa arpa_inet.h inet_addr, inet_ntoa - IPv4 address manipulation
-inet_ntop arpa_inet.h inet_ntop, inet_pton - convert IPv4 and IPv6 addresses between binary and text form
-inet_pton arpa_inet.h inet_ntop, inet_pton - convert IPv4 and IPv6 addresses between binary and text form
-initstate stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions
-insque search.h XSI insque, remque - insert or remove an element in a queue
-isalnum ctype.h CX isalnum, isalnum_l - test for an alphanumeric character
-isalnum_l ctype.h CX isalnum, isalnum_l - test for an alphanumeric character
-isalpha ctype.h CX isalpha, isalpha_l - test for an alphabetic character
-isalpha_l ctype.h CX isalpha, isalpha_l - test for an alphabetic character
-isascii ctype.h OB XSI isascii - test for a 7-bit US-ASCII character
-isatty unistd.h isatty - test for a terminal device
-isblank ctype.h CX isblank, isblank_l - test for a blank character
-isblank_l ctype.h CX isblank, isblank_l - test for a blank character
-iscntrl ctype.h CX iscntrl, iscntrl_l - test for a control character
-iscntrl_l ctype.h CX iscntrl, iscntrl_l - test for a control character
-isdigit ctype.h CX isdigit, isdigit_l - test for a decimal digit
-isdigit_l ctype.h CX isdigit, isdigit_l - test for a decimal digit
-isfinite math.h isfinite - test for finite value
-isgraph ctype.h CX isgraph, isgraph_l - test for a visible character
-isgraph_l ctype.h CX isgraph, isgraph_l - test for a visible character
-isgreater math.h isgreater - test if x greater than y
-isgreaterequal math.h isgreaterequal - test if x is greater than or equal to y
-isinf math.h isinf - test for infinity
-isless math.h isless - test if x is less than y
-islessequal math.h islessequal - test if x is less than or equal to y
-islessgreater math.h islessgreater - test if x is less than or greater than y
-islower ctype.h CX islower, islower_l - test for a lowercase letter
-islower_l ctype.h CX islower, islower_l - test for a lowercase letter
-isnan math.h isnan - test for a NaN
-isnormal math.h isnormal - test for a normal value
-isprint ctype.h CX isprint, isprint_l - test for a printable character
-isprint_l ctype.h CX isprint, isprint_l - test for a printable character
-ispunct ctype.h CX ispunct, ispunct_l - test for a punctuation character
-ispunct_l ctype.h CX ispunct, ispunct_l - test for a punctuation character
-isspace ctype.h CX isspace, isspace_l - test for a white-space character
-isspace_l ctype.h CX isspace, isspace_l - test for a white-space character
-isunordered math.h isunordered - test if arguments are unordered
-isupper ctype.h CX isupper, isupper_l - test for an uppercase letter
-isupper_l ctype.h CX isupper, isupper_l - test for an uppercase letter
-iswalnum wctype.h CX iswalnum, iswalnum_l - test for an alphanumeric wide-character code
-iswalnum_l wctype.h CX iswalnum, iswalnum_l - test for an alphanumeric wide-character code
-iswalpha wctype.h CX iswalpha, iswalpha_l - test for an alphabetic wide-character code
-iswalpha_l wctype.h CX iswalpha, iswalpha_l - test for an alphabetic wide-character code
-iswblank wctype.h CX iswblank, iswblank_l - test for a blank wide-character code
-iswblank_l wctype.h CX iswblank, iswblank_l - test for a blank wide-character code
-iswcntrl wctype.h CX iswcntrl, iswcntrl_l - test for a control wide-character code
-iswcntrl_l wctype.h CX iswcntrl, iswcntrl_l - test for a control wide-character code
-iswctype wctype.h CX iswctype, iswctype_l - test character for a specified class
-iswctype_l wctype.h CX iswctype, iswctype_l - test character for a specified class
-iswdigit wctype.h CX iswdigit, iswdigit_l - test for a decimal digit wide-character code
-iswdigit_l wctype.h CX iswdigit, iswdigit_l - test for a decimal digit wide-character code
-iswgraph wctype.h CX iswgraph, iswgraph_l - test for a visible wide-character code
-iswgraph_l wctype.h CX iswgraph, iswgraph_l - test for a visible wide-character code
-iswlower wctype.h CX iswlower, iswlower_l - test for a lowercase letter wide-character code
-iswlower_l wctype.h CX iswlower, iswlower_l - test for a lowercase letter wide-character code
-iswprint wctype.h CX iswprint, iswprint_l - test for a printable wide-character code
-iswprint_l wctype.h CX iswprint, iswprint_l - test for a printable wide-character code
-iswpunct wctype.h CX iswpunct, iswpunct_l - test for a punctuation wide-character code
-iswpunct_l wctype.h CX iswpunct, iswpunct_l - test for a punctuation wide-character code
-iswspace wctype.h CX iswspace, iswspace_l - test for a white-space wide-character code
-iswspace_l wctype.h CX iswspace, iswspace_l - test for a white-space wide-character code
-iswupper wctype.h CX iswupper, iswupper_l - test for an uppercase letter wide-character code
-iswupper_l wctype.h CX iswupper, iswupper_l - test for an uppercase letter wide-character code
-iswxdigit wctype.h CX iswxdigit, iswxdigit_l - test for a hexadecimal digit wide-character code
-iswxdigit_l wctype.h CX iswxdigit, iswxdigit_l - test for a hexadecimal digit wide-character code
-isxdigit ctype.h CX isxdigit, isxdigit_l - test for a hexadecimal digit
-isxdigit_l ctype.h CX isxdigit, isxdigit_l - test for a hexadecimal digit
-j0 math.h XSI j0, j1, jn - Bessel functions of the first kind
-j1 math.h XSI j0, j1, jn - Bessel functions of the first kind
-jn math.h XSI j0, j1, jn - Bessel functions of the first kind
-jrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-kill signal.h CX kill - send a signal to a process or a group of processes
-killpg signal.h XSI killpg - send a signal to a process group
-l64a stdlib.h XSI a64l, l64a - convert between a 32-bit integer and a radix-64 ASCII string
-labs stdlib.h labs, llabs - return a long integer absolute value
-lchown unistd.h lchown - change the owner and group of a symbolic link
-lcong48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-ldexp math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number
-ldexpf math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number
-ldexpl math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number
-ldiv stdlib.h ldiv, lldiv - compute quotient and remainder of a long division
-lfind search.h XSI lsearch, lfind - linear search and update
-lgamma math.h XSI lgamma, lgammaf, lgammal, signgam - log gamma function
-lgammaf math.h XSI lgamma, lgammaf, lgammal, signgam - log gamma function
-lgammal math.h XSI lgamma, lgammaf, lgammal, signgam - log gamma function
-link unistd.h link, linkat - link one file to another file relative to two directory file descriptors
-linkat unistd.h link, linkat - link one file to another file relative to two directory file descriptors
-lio_listio aio.h lio_listio - list directed I/O
-listen sys_socket.h listen - listen for socket connections and limit the queue of incoming connections
-llabs stdlib.h labs, llabs - return a long integer absolute value
-lldiv stdlib.h ldiv, lldiv - compute quotient and remainder of a long division
-llrint math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction
-llrintf math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction
-llrintl math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction
-llround math.h llround, llroundf, llroundl - round to nearest integer value
-llroundf math.h llround, llroundf, llroundl - round to nearest integer value
-llroundl math.h llround, llroundf, llroundl - round to nearest integer value
-localeconv locale.h localeconv - return locale-specific information
-localtime time.h CX localtime, localtime_r - convert a time value to a broken-down local time
-localtime_r time.h CX localtime, localtime_r - convert a time value to a broken-down local time
-lockf unistd.h XSI lockf - record locking on files
-log math.h log, logf, logl - natural logarithm function
-log10 math.h log10, log10f, log10l - base 10 logarithm function
-log10f math.h log10, log10f, log10l - base 10 logarithm function
-log10l math.h log10, log10f, log10l - base 10 logarithm function
-log1p math.h log1p, log1pf, log1pl - compute a natural logarithm
-log1pf math.h log1p, log1pf, log1pl - compute a natural logarithm
-log1pl math.h log1p, log1pf, log1pl - compute a natural logarithm
-log2 math.h log2, log2f, log2l - compute base 2 logarithm functions
-log2f math.h log2, log2f, log2l - compute base 2 logarithm functions
-log2l math.h log2, log2f, log2l - compute base 2 logarithm functions
-logb math.h logb, logbf, logbl - radix-independent exponent
-logbf math.h logb, logbf, logbl - radix-independent exponent
-logbl math.h logb, logbf, logbl - radix-independent exponent
-logf math.h log, logf, logl - natural logarithm function
-logl math.h log, logf, logl - natural logarithm function
-longjmp setjmp.h longjmp - non-local goto
-lrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-lrint math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction
-lrintf math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction
-lrintl math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction
-lround math.h lround, lroundf, lroundl - round to nearest integer value
-lroundf math.h lround, lroundf, lroundl - round to nearest integer value
-lroundl math.h lround, lroundf, lroundl - round to nearest integer value
-lsearch search.h XSI lsearch, lfind - linear search and update
-lseek unistd.h lseek - move the read/write file offset
-lstat sys_stat.h fstatat, lstat, stat - get file status
-malloc stdlib.h malloc - a memory allocator
-mblen stdlib.h mblen - get number of bytes in a character
-mbrlen wchar.h mbrlen - get number of bytes in a character (restartable)
-mbrtowc wchar.h mbrtowc - convert a character to a wide-character code (restartable)
-mbsinit wchar.h mbsinit - determine conversion object status
-mbsnrtowcs wchar.h CX mbsnrtowcs, mbsrtowcs - convert a character string to a wide-character string (restartable)
-mbsrtowcs wchar.h CX mbsnrtowcs, mbsrtowcs - convert a character string to a wide-character string (restartable)
-mbstowcs stdlib.h mbstowcs - convert a character string to a wide-character string
-mbtowc stdlib.h mbtowc - convert a character to a wide-character code
-memccpy string.h XSI memccpy - copy bytes in memory
-memchr string.h memchr - find byte in memory
-memcmp string.h memcmp - compare bytes in memory
-memcpy string.h memcpy - copy bytes in memory
-memmove string.h memmove - copy bytes in memory with overlapping areas
-memset string.h memset - set bytes in memory
-mkdir sys_stat.h mkdir, mkdirat - make a directory relative to directory file descriptor
-mkdirat sys_stat.h mkdir, mkdirat - make a directory relative to directory file descriptor
-mkdtemp stdlib.h CX mkdtemp, mkstemp - create a unique directory or file
-mkfifo sys_stat.h mkfifo, mkfifoat - make a FIFO special file relative to directory file descriptor
-mkfifoat sys_stat.h mkfifo, mkfifoat - make a FIFO special file relative to directory file descriptor
-mknod sys_stat.h XSI mknod, mknodat - make directory, special file, or regular file
-mknodat sys_stat.h XSI mknod, mknodat - make directory, special file, or regular file
-mkstemp stdlib.h CX mkdtemp, mkstemp - create a unique directory or file
-mktime time.h mktime - convert broken-down time into time since the Epoch
-mlock sys_mman.h MLR mlock, munlock - lock or unlock a range of process address space (<b>REALTIME</b>)
-mlockall sys_mman.h ML mlockall, munlockall - lock/unlock the address space of a process (<b>REALTIME</b>)
-mmap sys_mman.h mmap - map pages of memory
-modf math.h modf, modff, modfl - decompose a floating-point number
-modff math.h modf, modff, modfl - decompose a floating-point number
-modfl math.h modf, modff, modfl - decompose a floating-point number
-mprotect sys_mman.h mprotect - set protection of memory mapping
-mq_close mqueue.h MSG mq_close - close a message queue (<b>REALTIME</b>)
-mq_getattr mqueue.h MSG mq_getattr - get message queue attributes (<b>REALTIME</b>)
-mq_notify mqueue.h MSG mq_notify - notify process that a message is available (<b>REALTIME</b>)
-mq_open mqueue.h MSG mq_open - open a message queue (<b>REALTIME</b>)
-mq_receive mqueue.h mqueue.h time.h MSG mq_receive, mq_timedreceive - receive a message from a message queue (<b>REALTIME</b>)
-mq_send mqueue.h mqueue.h time.h MSG mq_send, mq_timedsend - send a message to a message queue (<b>REALTIME</b>)
-mq_setattr mqueue.h MSG mq_setattr - set message queue attributes (<b>REALTIME</b>)
-mq_timedreceive mqueue.h mqueue.h time.h MSG mq_receive, mq_timedreceive - receive a message from a message queue (<b>REALTIME</b>)
-mq_timedsend mqueue.h mqueue.h time.h MSG mq_send, mq_timedsend - send a message to a message queue (<b>REALTIME</b>)
-mq_unlink mqueue.h MSG mq_unlink - remove a message queue (<b>REALTIME</b>)
-mrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-msgctl sys_msg.h XSI msgctl - XSI message control operations
-msgget sys_msg.h XSI msgget - get the XSI message queue identifier
-msgrcv sys_msg.h XSI msgrcv - XSI message receive operation
-msgsnd sys_msg.h XSI msgsnd - XSI message send operation
-msync sys_mman.h XSI msync - synchronize memory with physical storage
-munlock sys_mman.h MLR mlock, munlock - lock or unlock a range of process address space (<b>REALTIME</b>)
-munlockall sys_mman.h ML mlockall, munlockall - lock/unlock the address space of a process (<b>REALTIME</b>)
-munmap sys_mman.h munmap - unmap pages of memory
-nan math.h nan, nanf, nanl - return quiet NaN
-nanf math.h nan, nanf, nanl - return quiet NaN
-nanl math.h nan, nanf, nanl - return quiet NaN
-nanosleep time.h CX nanosleep - high resolution sleep
-nearbyint math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions
-nearbyintf math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions
-nearbyintl math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions
-newlocale locale.h CX newlocale - create or modify a locale object
-nextafter math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nextafterf math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nextafterl math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nexttoward math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nexttowardf math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nexttowardl math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number
-nftw ftw.h XSI nftw - walk a file tree
-nice unistd.h XSI nice - change the nice value of a process
-nl_langinfo langinfo.h nl_langinfo, nl_langinfo_l - language information
-nl_langinfo_l langinfo.h nl_langinfo, nl_langinfo_l - language information
-nrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-ntohl arpa_inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order
-ntohs arpa_inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order
-open sys/stat.h fcntl.h OH open, openat - open file relative to directory file descriptor
-open_memstream stdio.h wchar.h CX open_memstream, open_wmemstream - open a dynamic memory buffer stream
-open_wmemstream stdio.h wchar.h CX open_memstream, open_wmemstream - open a dynamic memory buffer stream
-openat sys/stat.h fcntl.h OH open, openat - open file relative to directory file descriptor
-opendir dirent.h fdopendir, opendir - open directory associated with file descriptor
-openlog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log
-optarg unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
-opterr unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
-optind unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
-optopt unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
-pathconf unistd.h fpathconf, pathconf - get configurable pathname variables
-pause unistd.h pause - suspend the thread until a signal is received
-pclose stdio.h CX pclose - close a pipe stream to or from a process
-perror stdio.h perror - write error messages to standard error
-pipe unistd.h pipe - create an interprocess channel
-poll poll.h poll - input/output multiplexing
-popen stdio.h CX popen - initiate pipe streams to or from a process
-posix_fadvise fcntl.h ADV posix_fadvise - file advisory information (<b>ADVANCED REALTIME</b>)
-posix_fallocate fcntl.h ADV posix_fallocate - file space control (<b>ADVANCED REALTIME</b>)
-posix_madvise sys_mman.h ADV posix_madvise - memory advisory information and alignment control (<b>ADVANCED REALTIME</b>)
-posix_mem_offset sys_mman.h TYM posix_mem_offset - find offset and length of a mapped typed memory block (<b>ADVANCED REALTIME</b>)
-posix_memalign stdlib.h ADV posix_memalign - aligned memory allocation (<b>ADVANCED REALTIME</b>)
-posix_openpt stdlib.h fcntl.h XSI posix_openpt - open a pseudo-terminal device
-posix_spawn spawn.h SPN posix_spawn, posix_spawnp - spawn a process (<b>ADVANCED REALTIME</b>)
-posix_spawn_file_actions_addclose spawn.h SPN posix_spawn_file_actions_addclose, posix_spawn_file_actions_addopen - add close or open action to spawn file actions object (<b>ADVANCED REALTIME</b>)
-posix_spawn_file_actions_adddup2 spawn.h SPN posix_spawn_file_actions_adddup2 - add dup2 action to spawn file actions object (<b>ADVANCED REALTIME</b>)
-posix_spawn_file_actions_addopen spawn.h SPN posix_spawn_file_actions_addclose, posix_spawn_file_actions_addopen - add close or open action to spawn file actions object (<b>ADVANCED REALTIME</b>)
-posix_spawn_file_actions_destroy spawn.h SPN posix_spawn_file_actions_destroy, posix_spawn_file_actions_init - destroy and initialize spawn file actions object (<b>ADVANCED REALTIME</b>)
-posix_spawn_file_actions_init spawn.h SPN posix_spawn_file_actions_destroy, posix_spawn_file_actions_init - destroy and initialize spawn file actions object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_destroy spawn.h SPN posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getflags spawn.h SPN posix_spawnattr_getflags, posix_spawnattr_setflags - get and set the spawn-flags attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getpgroup spawn.h SPN posix_spawnattr_getpgroup, posix_spawnattr_setpgroup - get and set the spawn-pgroup attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getschedparam spawn.h sched.h SPN PS posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get and set the spawn-schedparam attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getschedpolicy spawn.h sched.h SPN PS posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getsigdefault signal.h spawn.h SPN posix_spawnattr_getsigdefault, posix_spawnattr_setsigdefault - get and set the spawn-sigdefault attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_getsigmask signal.h spawn.h SPN posix_spawnattr_getsigmask, posix_spawnattr_setsigmask - get and set the spawn-sigmask attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_init spawn.h SPN posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setflags spawn.h SPN posix_spawnattr_getflags, posix_spawnattr_setflags - get and set the spawn-flags attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setpgroup spawn.h SPN posix_spawnattr_getpgroup, posix_spawnattr_setpgroup - get and set the spawn-pgroup attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setschedparam spawn.h sched.h SPN PS posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get and set the spawn-schedparam attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setschedpolicy spawn.h sched.h SPN PS posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setsigdefault signal.h spawn.h SPN posix_spawnattr_getsigdefault, posix_spawnattr_setsigdefault - get and set the spawn-sigdefault attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnattr_setsigmask signal.h spawn.h SPN posix_spawnattr_getsigmask, posix_spawnattr_setsigmask - get and set the spawn-sigmask attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>)
-posix_spawnp spawn.h SPN posix_spawn, posix_spawnp - spawn a process (<b>ADVANCED REALTIME</b>)
-posix_typed_mem_get_info sys_mman.h TYM posix_typed_mem_get_info - query typed memory information (<b>ADVANCED REALTIME</b>)
-posix_typed_mem_open sys_mman.h TYM posix_typed_mem_open - open a typed memory object (<b>ADVANCED REALTIME</b>)
-pow math.h pow, powf, powl - power function
-powf math.h pow, powf, powl - power function
-powl math.h pow, powf, powl - power function
-pread unistd.h pread, read - read from a file
-printf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output
-pselect sys_select.h pselect, select - synchronous I/O multiplexing
-psiginfo signal.h CX psiginfo, psignal - print signal information to standard error
-psignal signal.h CX psiginfo, psignal - print signal information to standard error
-pthread_atfork pthread.h pthread_atfork - register fork handlers
-pthread_attr_destroy pthread.h pthread_attr_destroy, pthread_attr_init - destroy and initialize the thread attributes object
-pthread_attr_getdetachstate pthread.h pthread_attr_getdetachstate, pthread_attr_setdetachstate - get and set the detachstate attribute
-pthread_attr_getguardsize pthread.h pthread_attr_getguardsize, pthread_attr_setguardsize - get and set the thread guardsize attribute
-pthread_attr_getinheritsched pthread.h TPS pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the inheritsched attribute (<b>REALTIME THREADS</b>)
-pthread_attr_getschedparam pthread.h pthread_attr_getschedparam, pthread_attr_setschedparam - get and set the schedparam attribute
-pthread_attr_getschedpolicy pthread.h TPS pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get and set the schedpolicy attribute (<b>REALTIME THREADS</b>)
-pthread_attr_getscope pthread.h TPS pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (<b>REALTIME THREADS</b>)
-pthread_attr_getstack pthread.h TSA TSS pthread_attr_getstack, pthread_attr_setstack - get and set stack attributes
-pthread_attr_getstacksize pthread.h TSS pthread_attr_getstacksize, pthread_attr_setstacksize - get and set the stacksize attribute
-pthread_attr_init pthread.h pthread_attr_destroy, pthread_attr_init - destroy and initialize the thread attributes object
-pthread_attr_setdetachstate pthread.h pthread_attr_getdetachstate, pthread_attr_setdetachstate - get and set the detachstate attribute
-pthread_attr_setguardsize pthread.h pthread_attr_getguardsize, pthread_attr_setguardsize - get and set the thread guardsize attribute
-pthread_attr_setinheritsched pthread.h TPS pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the inheritsched attribute (<b>REALTIME THREADS</b>)
-pthread_attr_setschedparam pthread.h pthread_attr_getschedparam, pthread_attr_setschedparam - get and set the schedparam attribute
-pthread_attr_setschedpolicy pthread.h TPS pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get and set the schedpolicy attribute (<b>REALTIME THREADS</b>)
-pthread_attr_setscope pthread.h TPS pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (<b>REALTIME THREADS</b>)
-pthread_attr_setstack pthread.h TSA TSS pthread_attr_getstack, pthread_attr_setstack - get and set stack attributes
-pthread_attr_setstacksize pthread.h TSS pthread_attr_getstacksize, pthread_attr_setstacksize - get and set the stacksize attribute
-pthread_barrier_destroy pthread.h pthread_barrier_destroy, pthread_barrier_init - destroy and initialize a barrier object
-pthread_barrier_init pthread.h pthread_barrier_destroy, pthread_barrier_init - destroy and initialize a barrier object
-pthread_barrier_wait pthread.h pthread_barrier_wait - synchronize at a barrier
-pthread_barrierattr_destroy pthread.h pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize the barrier attributes object
-pthread_barrierattr_getpshared pthread.h TSH pthread_barrierattr_getpshared, pthread_barrierattr_setpshared - get and set the process-shared attribute of the barrier attributes object
-pthread_barrierattr_init pthread.h pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize the barrier attributes object
-pthread_barrierattr_setpshared pthread.h TSH pthread_barrierattr_getpshared, pthread_barrierattr_setpshared - get and set the process-shared attribute of the barrier attributes object
-pthread_cancel pthread.h pthread_cancel - cancel execution of a thread
-pthread_cleanup_pop pthread.h pthread_cleanup_pop, pthread_cleanup_push - establish cancellation handlers
-pthread_cleanup_push pthread.h pthread_cleanup_pop, pthread_cleanup_push - establish cancellation handlers
-pthread_cond_broadcast pthread.h pthread_cond_broadcast, pthread_cond_signal - broadcast or signal a condition
-pthread_cond_destroy pthread.h pthread_cond_destroy, pthread_cond_init - destroy and initialize condition variables
-pthread_cond_init pthread.h pthread_cond_destroy, pthread_cond_init - destroy and initialize condition variables
-pthread_cond_signal pthread.h pthread_cond_broadcast, pthread_cond_signal - broadcast or signal a condition
-pthread_cond_timedwait pthread.h pthread_cond_timedwait, pthread_cond_wait - wait on a condition
-pthread_cond_wait pthread.h pthread_cond_timedwait, pthread_cond_wait - wait on a condition
-pthread_condattr_destroy pthread.h pthread_condattr_destroy, pthread_condattr_init - destroy and initialize the condition variable attributes object
-pthread_condattr_getclock pthread.h pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock selection condition variable attribute
-pthread_condattr_getpshared pthread.h TSH pthread_condattr_getpshared, pthread_condattr_setpshared - get and set the process-shared condition variable attributes
-pthread_condattr_init pthread.h pthread_condattr_destroy, pthread_condattr_init - destroy and initialize the condition variable attributes object
-pthread_condattr_setclock pthread.h pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock selection condition variable attribute
-pthread_condattr_setpshared pthread.h TSH pthread_condattr_getpshared, pthread_condattr_setpshared - get and set the process-shared condition variable attributes
-pthread_create pthread.h pthread_create - thread creation
-pthread_detach pthread.h pthread_detach - detach a thread
-pthread_equal pthread.h pthread_equal - compare thread IDs
-pthread_exit pthread.h pthread_exit - thread termination
-pthread_getconcurrency pthread.h OB XSI pthread_getconcurrency, pthread_setconcurrency - get and set the level of concurrency
-pthread_getcpuclockid pthread.h time.h TCT pthread_getcpuclockid - access a thread CPU-time clock (<b>ADVANCED REALTIME THREADS</b>)
-pthread_getschedparam pthread.h TPS pthread_getschedparam, pthread_setschedparam - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>)
-pthread_getspecific pthread.h pthread_getspecific, pthread_setspecific - thread-specific data management
-pthread_join pthread.h pthread_join - wait for thread termination
-pthread_key_create pthread.h pthread_key_create - thread-specific data key creation
-pthread_key_delete pthread.h pthread_key_delete - thread-specific data key deletion
-pthread_kill signal.h CX pthread_kill - send a signal to a thread
-pthread_mutex_consistent pthread.h pthread_mutex_consistent - mark state protected by robust mutex as consistent
-pthread_mutex_destroy pthread.h pthread_mutex_destroy, pthread_mutex_init - destroy and initialize a mutex
-pthread_mutex_getprioceiling pthread.h RPP pthread_mutex_getprioceiling, pthread_mutex_setprioceiling - get and set the priority ceiling of a mutex (<b>REALTIME THREADS</b>)
-pthread_mutex_init pthread.h pthread_mutex_destroy, pthread_mutex_init - destroy and initialize a mutex
-pthread_mutex_lock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex
-pthread_mutex_setprioceiling pthread.h RPP pthread_mutex_getprioceiling, pthread_mutex_setprioceiling - get and set the priority ceiling of a mutex (<b>REALTIME THREADS</b>)
-pthread_mutex_timedlock pthread.h time.h pthread_mutex_timedlock - lock a mutex
-pthread_mutex_trylock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex
-pthread_mutex_unlock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex
-pthread_mutexattr_destroy pthread.h pthread_mutexattr_destroy, pthread_mutexattr_init - destroy and initialize the mutex attributes object
-pthread_mutexattr_getprioceiling pthread.h RPP pthread_mutexattr_getprioceiling, pthread_mutexattr_setprioceiling - get and set the prioceiling attribute of the mutex attributes object (<b>REALTIME THREADS</b>)
-pthread_mutexattr_getprotocol pthread.h MC1 pthread_mutexattr_getprotocol, pthread_mutexattr_setprotocol - get and set the protocol attribute of the mutex attributes object (<b>REALTIME THREADS</b>)
-pthread_mutexattr_getpshared pthread.h TSH pthread_mutexattr_getpshared, pthread_mutexattr_setpshared - get and set the process-shared attribute
-pthread_mutexattr_getrobust pthread.h pthread_mutexattr_getrobust, pthread_mutexattr_setrobust - get and set the mutex robust attribute
-pthread_mutexattr_gettype pthread.h pthread_mutexattr_gettype, pthread_mutexattr_settype - get and set the mutex type attribute
-pthread_mutexattr_init pthread.h pthread_mutexattr_destroy, pthread_mutexattr_init - destroy and initialize the mutex attributes object
-pthread_mutexattr_setprioceiling pthread.h RPP pthread_mutexattr_getprioceiling, pthread_mutexattr_setprioceiling - get and set the prioceiling attribute of the mutex attributes object (<b>REALTIME THREADS</b>)
-pthread_mutexattr_setprotocol pthread.h MC1 pthread_mutexattr_getprotocol, pthread_mutexattr_setprotocol - get and set the protocol attribute of the mutex attributes object (<b>REALTIME THREADS</b>)
-pthread_mutexattr_setpshared pthread.h TSH pthread_mutexattr_getpshared, pthread_mutexattr_setpshared - get and set the process-shared attribute
-pthread_mutexattr_setrobust pthread.h pthread_mutexattr_getrobust, pthread_mutexattr_setrobust - get and set the mutex robust attribute
-pthread_mutexattr_settype pthread.h pthread_mutexattr_gettype, pthread_mutexattr_settype - get and set the mutex type attribute
-pthread_once pthread.h pthread_once - dynamic package initialization
-pthread_rwlock_destroy pthread.h pthread_rwlock_destroy, pthread_rwlock_init - destroy and initialize a read-write lock object
-pthread_rwlock_init pthread.h pthread_rwlock_destroy, pthread_rwlock_init - destroy and initialize a read-write lock object
-pthread_rwlock_rdlock pthread.h pthread_rwlock_rdlock, pthread_rwlock_tryrdlock - lock a read-write lock object for reading
-pthread_rwlock_timedrdlock pthread.h time.h pthread_rwlock_timedrdlock - lock a read-write lock for reading
-pthread_rwlock_timedwrlock pthread.h time.h pthread_rwlock_timedwrlock - lock a read-write lock for writing
-pthread_rwlock_tryrdlock pthread.h pthread_rwlock_rdlock, pthread_rwlock_tryrdlock - lock a read-write lock object for reading
-pthread_rwlock_trywrlock pthread.h pthread_rwlock_trywrlock, pthread_rwlock_wrlock - lock a read-write lock object for writing
-pthread_rwlock_unlock pthread.h pthread_rwlock_unlock - unlock a read-write lock object
-pthread_rwlock_wrlock pthread.h pthread_rwlock_trywrlock, pthread_rwlock_wrlock - lock a read-write lock object for writing
-pthread_rwlockattr_destroy pthread.h pthread_rwlockattr_destroy, pthread_rwlockattr_init - destroy and initialize the read-write lock attributes object
-pthread_rwlockattr_getpshared pthread.h TSH pthread_rwlockattr_getpshared, pthread_rwlockattr_setpshared - get and set the process-shared attribute of the read-write lock attributes object
-pthread_rwlockattr_init pthread.h pthread_rwlockattr_destroy, pthread_rwlockattr_init - destroy and initialize the read-write lock attributes object
-pthread_rwlockattr_setpshared pthread.h TSH pthread_rwlockattr_getpshared, pthread_rwlockattr_setpshared - get and set the process-shared attribute of the read-write lock attributes object
-pthread_self pthread.h pthread_self - get the calling thread ID
-pthread_setcancelstate pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state
-pthread_setcanceltype pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state
-pthread_setconcurrency pthread.h OB XSI pthread_getconcurrency, pthread_setconcurrency - get and set the level of concurrency
-pthread_setschedparam pthread.h TPS pthread_getschedparam, pthread_setschedparam - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>)
-pthread_setschedprio pthread.h TPS pthread_setschedprio - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>)
-pthread_setspecific pthread.h pthread_getspecific, pthread_setspecific - thread-specific data management
-pthread_sigmask signal.h CX pthread_sigmask, sigprocmask - examine and change blocked signals
-pthread_spin_destroy pthread.h pthread_spin_destroy, pthread_spin_init - destroy or initialize a spin lock object
-pthread_spin_init pthread.h pthread_spin_destroy, pthread_spin_init - destroy or initialize a spin lock object
-pthread_spin_lock pthread.h pthread_spin_lock, pthread_spin_trylock - lock a spin lock object
-pthread_spin_trylock pthread.h pthread_spin_lock, pthread_spin_trylock - lock a spin lock object
-pthread_spin_unlock pthread.h pthread_spin_unlock - unlock a spin lock object
-pthread_testcancel pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state
-ptsname stdlib.h XSI ptsname - get name of the slave pseudo-terminal device
-putc stdio.h putc - put a byte on a stream
-putc_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking
-putchar stdio.h putchar - put a byte on a stdout stream
-putchar_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking
-putenv stdlib.h XSI putenv - change or add a value to an environment
-puts stdio.h puts - put a string on standard output
-pututxline utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-putwc stdio.h wchar.h putwc - put a wide character on a stream
-putwchar wchar.h putwchar - put a wide character on a stdout stream
-pwrite unistd.h pwrite, write - write on a file
-qsort stdlib.h qsort - sort a table of data
-raise signal.h raise - send a signal to the executing process
-rand stdlib.h OB CX rand, rand_r, srand - pseudo-random number generator
-rand_r stdlib.h OB CX rand, rand_r, srand - pseudo-random number generator
-random stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions
-read unistd.h pread, read - read from a file
-readdir dirent.h readdir, readdir_r - read a directory
-readdir_r dirent.h readdir, readdir_r - read a directory
-readlink unistd.h readlink, readlinkat - read the contents of a symbolic link relative to a directory file descriptor
-readlinkat unistd.h readlink, readlinkat - read the contents of a symbolic link relative to a directory file descriptor
-readv sys_uio.h XSI readv - read a vector
-realloc stdlib.h realloc - memory reallocator
-realpath stdlib.h XSI realpath - resolve a pathname
-recv sys_socket.h recv - receive a message from a connected socket
-recvfrom sys_socket.h recvfrom - receive a message from a socket
-recvmsg sys_socket.h recvmsg - receive a message from a socket
-regcomp regex.h regcomp, regerror, regexec, regfree - regular expression matching
-regerror regex.h regcomp, regerror, regexec, regfree - regular expression matching
-regexec regex.h regcomp, regerror, regexec, regfree - regular expression matching
-regfree regex.h regcomp, regerror, regexec, regfree - regular expression matching
-remainder math.h remainder, remainderf, remainderl - remainder function
-remainderf math.h remainder, remainderf, remainderl - remainder function
-remainderl math.h remainder, remainderf, remainderl - remainder function
-remove stdio.h remove - remove a file
-remque search.h XSI insque, remque - insert or remove an element in a queue
-remquo math.h remquo, remquof, remquol - remainder functions
-remquof math.h remquo, remquof, remquol - remainder functions
-remquol math.h remquo, remquof, remquol - remainder functions
-rename stdio.h CX rename, renameat - rename file relative to directory file descriptor
-renameat stdio.h CX rename, renameat - rename file relative to directory file descriptor
-rewind stdio.h rewind - reset the file position indicator in a stream
-rewinddir dirent.h rewinddir - reset the position of a directory stream to the beginning of a directory
-rint math.h rint, rintf, rintl - round-to-nearest integral value
-rintf math.h rint, rintf, rintl - round-to-nearest integral value
-rintl math.h rint, rintf, rintl - round-to-nearest integral value
-rmdir unistd.h rmdir - remove a directory
-round math.h round, roundf, roundl - round to the nearest integer value in a floating-point format
-roundf math.h round, roundf, roundl - round to the nearest integer value in a floating-point format
-roundl math.h round, roundf, roundl - round to the nearest integer value in a floating-point format
-scalbln math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scalblnf math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scalblnl math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scalbn math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scalbnf math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scalbnl math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
-scandir dirent.h alphasort, scandir - scan a directory
-scanf stdio.h fscanf, scanf, sscanf - convert formatted input
-sched_get_priority_max sched.h PS sched_get_priority_max, sched_get_priority_min - get priority limits (<b>REALTIME</b>)
-sched_get_priority_min sched.h PS sched_get_priority_max, sched_get_priority_min - get priority limits (<b>REALTIME</b>)
-sched_getparam sched.h PS sched_getparam - get scheduling parameters (<b>REALTIME</b>)
-sched_getscheduler sched.h PS sched_getscheduler - get scheduling policy (<b>REALTIME</b>)
-sched_rr_get_interval sched.h PS sched_rr_get_interval - get execution time limits (<b>REALTIME</b>)
-sched_setparam sched.h PS sched_setparam - set scheduling parameters (<b>REALTIME</b>)
-sched_setscheduler sched.h PS sched_setscheduler - set scheduling policy and parameters (<b>REALTIME</b>)
-sched_yield sched.h sched_yield - yield the processor
-seed48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-seekdir dirent.h XSI seekdir - set the position of a directory stream
-select sys_select.h pselect, select - synchronous I/O multiplexing
-sem_close semaphore.h sem_close - close a named semaphore
-sem_destroy semaphore.h sem_destroy - destroy an unnamed semaphore
-sem_getvalue semaphore.h sem_getvalue - get the value of a semaphore
-sem_init semaphore.h sem_init - initialize an unnamed semaphore
-sem_open semaphore.h sem_open - initialize and open a named semaphore
-sem_post semaphore.h sem_post - unlock a semaphore
-sem_timedwait semaphore.h time.h sem_timedwait - lock a semaphore
-sem_trywait semaphore.h sem_trywait, sem_wait - lock a semaphore
-sem_unlink semaphore.h sem_unlink - remove a named semaphore
-sem_wait semaphore.h sem_trywait, sem_wait - lock a semaphore
-semctl sys/sem.h XSI semctl - XSI semaphore control operations
-semget sys_sem.h XSI semget - get set of XSI semaphores
-semop sys_sem.h XSI semop - XSI semaphore operations
-send sys_socket.h send - send a message on a socket
-sendmsg sys_socket.h sendmsg - send a message on a socket using a message structure
-sendto sys_socket.h sendto - send a message on a socket
-setbuf stdio.h setbuf - assign buffering to a stream
-setegid unistd.h setegid - set the effective group ID
-setenv stdlib.h CX setenv - add or change environment variable
-seteuid unistd.h seteuid - set effective user ID
-setgid unistd.h setgid - set-group-ID
-setgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions
-sethostent netdb.h endhostent, gethostent, sethostent - network host database functions
-setitimer sys_time.h OB XSI getitimer, setitimer - get and set value of interval timer
-setjmp setjmp.h setjmp - set jump point for a non-local goto
-setkey stdlib.h XSI setkey - set encoding key (<b>CRYPT</b>)
-setlocale locale.h setlocale - set program locale
-setlogmask syslog.h XSI closelog, openlog, setlogmask, syslog - control system log
-setnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
-setpgid unistd.h setpgid - set process group ID for job control
-setpgrp unistd.h OB XSI setpgrp - set the process group ID
-setpriority sys_resource.h XSI getpriority, setpriority - get and set the nice value
-setprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
-setpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions
-setregid unistd.h XSI setregid - set real and effective group IDs
-setreuid unistd.h XSI setreuid - set real and effective user IDs
-setrlimit sys_resource.h XSI getrlimit, setrlimit - control maximum resource consumption
-setservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions
-setsid unistd.h setsid - create session and set process group ID
-setsockopt sys_socket.h setsockopt - set the socket options
-setstate stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions
-setuid unistd.h setuid - set user ID
-setutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
-setvbuf stdio.h setvbuf - assign buffering to a stream
-shm_open sys_mman.h SHM shm_open - open a shared memory object (<b>REALTIME</b>)
-shm_unlink sys_mman.h SHM shm_unlink - remove a shared memory object (<b>REALTIME</b>)
-shmat sys_shm.h XSI shmat - XSI shared memory attach operation
-shmctl sys_shm.h XSI shmctl - XSI shared memory control operations
-shmdt sys_shm.h XSI shmdt - XSI shared memory detach operation
-shmget sys_shm.h XSI shmget - get an XSI shared memory segment
-shutdown sys_socket.h shutdown - shut down socket send and receive operations
-sigaction signal.h CX sigaction - examine and change a signal action
-sigaddset signal.h CX sigaddset - add a signal to a signal set
-sigaltstack signal.h XSI sigaltstack - set and get signal alternate stack context
-sigdelset signal.h CX sigdelset - delete a signal from a signal set
-sigemptyset signal.h CX sigemptyset - initialize and empty a signal set
-sigfillset signal.h CX sigfillset - initialize and fill a signal set
-sighold signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management
-sigignore signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management
-siginterrupt signal.h OB XSI siginterrupt - allow signals to interrupt functions
-sigismember signal.h CX sigismember - test for a signal in a signal set
-siglongjmp setjmp.h CX siglongjmp - non-local goto with signal handling
-signal signal.h signal - signal management
-signbit math.h signbit - test sign
-signgam math.h XSI lgamma, lgammaf, lgammal, signgam - log gamma function
-sigpause signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management
-sigpending signal.h CX sigpending - examine pending signals
-sigprocmask signal.h CX pthread_sigmask, sigprocmask - examine and change blocked signals
-sigqueue signal.h CX sigqueue - queue a signal to a process
-sigrelse signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management
-sigset signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management
-sigsetjmp setjmp.h CX sigsetjmp - set jump point for a non-local goto
-sigsuspend signal.h CX sigsuspend - wait for a signal
-sigtimedwait signal.h CX sigtimedwait, sigwaitinfo - wait for queued signals
-sigwait signal.h CX sigwait - wait for queued signals
-sigwaitinfo signal.h CX sigtimedwait, sigwaitinfo - wait for queued signals
-sin math.h sin, sinf, sinl - sine function
-sinf math.h sin, sinf, sinl - sine function
-sinh math.h sinh, sinhf, sinhl - hyperbolic sine functions
-sinhf math.h sinh, sinhf, sinhl - hyperbolic sine functions
-sinhl math.h sinh, sinhf, sinhl - hyperbolic sine functions
-sinl math.h sin, sinf, sinl - sine function
-sleep unistd.h sleep - suspend execution for an interval of time
-snprintf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output
-sockatmark sys_socket.h sockatmark - determine whether a socket is at the out-of-band mark
-socket sys_socket.h socket - create an endpoint for communication
-socketpair sys_socket.h socketpair - create a pair of connected sockets
-sprintf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output
-sqrt math.h sqrt, sqrtf, sqrtl - square root function
-sqrtf math.h sqrt, sqrtf, sqrtl - square root function
-sqrtl math.h sqrt, sqrtf, sqrtl - square root function
-srand stdlib.h OB CX rand, rand_r, srand - pseudo-random number generator
-srand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
-srandom stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions
-sscanf stdio.h fscanf, scanf, sscanf - convert formatted input
-stat sys_stat.h fstatat, lstat, stat - get file status
-statvfs sys_statvfs.h fstatvfs, statvfs - get file system information
-stderr stdio.h stderr, stdin, stdout - standard I/O streams
-stdin stdio.h stderr, stdin, stdout - standard I/O streams
-stdout stdio.h stderr, stdin, stdout - standard I/O streams
-stpcpy string.h CX stpcpy, strcpy - copy a string and return a pointer to the end of the result
-stpncpy string.h CX stpncpy, strncpy - copy fixed length string, returning a pointer to the array end
-strcasecmp strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons
-strcasecmp_l strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons
-strcat string.h strcat - concatenate two strings
-strchr string.h strchr - string scanning operation
-strcmp string.h strcmp - compare two strings
-strcoll string.h CX strcoll, strcoll_l - string comparison using collating information
-strcoll_l string.h CX strcoll, strcoll_l - string comparison using collating information
-strcpy string.h CX stpcpy, strcpy - copy a string and return a pointer to the end of the result
-strcspn string.h strcspn - get the length of a complementary substring
-strdup string.h CX strdup, strndup - duplicate a specific number of bytes from a string
-strerror string.h CX strerror, strerror_l, strerror_r - get error message string
-strerror_l string.h CX strerror, strerror_l, strerror_r - get error message string
-strerror_r string.h CX strerror, strerror_l, strerror_r - get error message string
-strfmon monetary.h strfmon, strfmon_l - convert monetary value to a string
-strfmon_l monetary.h strfmon, strfmon_l - convert monetary value to a string
-strftime time.h CX strftime, strftime_l - convert date and time to a string
-strftime_l time.h CX strftime, strftime_l - convert date and time to a string
-strlen string.h CX strlen, strnlen - get length of fixed size string
-strncasecmp strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons
-strncasecmp_l strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons
-strncat string.h strncat - concatenate a string with part of another
-strncmp string.h strncmp - compare part of two strings
-strncpy string.h CX stpncpy, strncpy - copy fixed length string, returning a pointer to the array end
-strndup string.h CX strdup, strndup - duplicate a specific number of bytes from a string
-strnlen string.h CX strlen, strnlen - get length of fixed size string
-strpbrk string.h strpbrk - scan a string for a byte
-strptime time.h XSI strptime - date and time conversion
-strrchr string.h strrchr - string scanning operation
-strsignal string.h CX strsignal - get name of signal
-strspn string.h strspn - get length of a substring
-strstr string.h strstr - find a substring
-strtod stdlib.h strtod, strtof, strtold - convert a string to a double-precision number
-strtof stdlib.h strtod, strtof, strtold - convert a string to a double-precision number
-strtoimax inttypes.h strtoimax, strtoumax - convert string to integer type
-strtok string.h CX strtok, strtok_r - split string into tokens
-strtok_r string.h CX strtok, strtok_r - split string into tokens
-strtol stdlib.h strtol, strtoll - convert a string to a long integer
-strtold stdlib.h strtod, strtof, strtold - convert a string to a double-precision number
-strtoll stdlib.h strtol, strtoll - convert a string to a long integer
-strtoul stdlib.h strtoul, strtoull - convert a string to an unsigned long
-strtoull stdlib.h strtoul, strtoull - convert a string to an unsigned long
-strtoumax inttypes.h strtoimax, strtoumax - convert string to integer type
-strxfrm string.h CX strxfrm, strxfrm_l - string transformation
-strxfrm_l string.h CX strxfrm, strxfrm_l - string transformation
-swab unistd.h XSI swab - swap bytes
-swprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output
-swscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input
-symlink unistd.h symlink, symlinkat - make a symbolic link relative to directory file descriptor
-symlinkat unistd.h symlink, symlinkat - make a symbolic link relative to directory file descriptor
-sync unistd.h XSI sync - schedule file system updates
-sysconf unistd.h sysconf - get configurable system variables
-syslog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log
-system stdlib.h system - issue a command
-tan math.h tan, tanf, tanl - tangent function
-tanf math.h tan, tanf, tanl - tangent function
-tanh math.h tanh, tanhf, tanhl - hyperbolic tangent functions
-tanhf math.h tanh, tanhf, tanhl - hyperbolic tangent functions
-tanhl math.h tanh, tanhf, tanhl - hyperbolic tangent functions
-tanl math.h tan, tanf, tanl - tangent function
-tcdrain termios.h tcdrain - wait for transmission of output
-tcflow termios.h tcflow - suspend or restart the transmission or reception of data
-tcflush termios.h tcflush - flush non-transmitted output data, non-read input data, or both
-tcgetattr termios.h tcgetattr - get the parameters associated with the terminal
-tcgetpgrp unistd.h tcgetpgrp - get the foreground process group ID
-tcgetsid termios.h tcgetsid - get the process group ID for the session leader for the controlling terminal
-tcsendbreak termios.h tcsendbreak - send a break for a specific duration
-tcsetattr termios.h tcsetattr - set the parameters associated with the terminal
-tcsetpgrp unistd.h tcsetpgrp - set the foreground process group ID
-tdelete search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree
-telldir dirent.h XSI telldir - current location of a named directory stream
-tempnam stdio.h OB XSI tempnam - create a name for a temporary file
-tfind search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree
-tgamma math.h tgamma, tgammaf, tgammal - compute gamma() function
-tgammaf math.h tgamma, tgammaf, tgammal - compute gamma() function
-tgammal math.h tgamma, tgammaf, tgammal - compute gamma() function
-time time.h time - get time
-timer_create signal.h time.h CX timer_create - create a per-process timer
-timer_delete time.h CX timer_delete - delete a per-process timer
-timer_getoverrun time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers
-timer_gettime time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers
-timer_settime time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers
-times sys_times.h times - get process and waited-for child process times
-timezone time.h XSI CX daylight, timezone, tzname, tzset - set timezone conversion information
-tmpfile stdio.h tmpfile - create a temporary file
-tmpnam stdio.h OB tmpnam - create a name for a temporary file
-toascii ctype.h OB XSI toascii - translate an integer to a 7-bit ASCII character
-tolower ctype.h CX tolower, tolower_l - transliterate uppercase characters to lowercase
-tolower_l ctype.h CX tolower, tolower_l - transliterate uppercase characters to lowercase
-toupper ctype.h CX toupper, toupper_l - transliterate lowercase characters to uppercase
-toupper_l ctype.h CX toupper, toupper_l - transliterate lowercase characters to uppercase
-towctrans wctype.h CX towctrans, towctrans_l - wide-character transliteration
-towctrans_l wctype.h CX towctrans, towctrans_l - wide-character transliteration
-towlower wctype.h CX towlower, towlower_l - transliterate uppercase wide-character code to lowercase
-towlower_l wctype.h CX towlower, towlower_l - transliterate uppercase wide-character code to lowercase
-towupper wctype.h CX towupper, towupper_l - transliterate lowercase wide-character code to uppercase
-towupper_l wctype.h CX towupper, towupper_l - transliterate lowercase wide-character code to uppercase
-trunc math.h trunc, truncf, truncl - round to truncated integer value
-truncate unistd.h truncate - truncate a file to a specified length
-truncf math.h trunc, truncf, truncl - round to truncated integer value
-truncl math.h trunc, truncf, truncl - round to truncated integer value
-tsearch search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree
-ttyname unistd.h ttyname, ttyname_r - find the pathname of a terminal
-ttyname_r unistd.h ttyname, ttyname_r - find the pathname of a terminal
-twalk search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree
-tzname time.h XSI CX daylight, timezone, tzname, tzset - set timezone conversion information
-tzset time.h XSI CX daylight, timezone, tzname, tzset - set timezone conversion information
-ulimit ulimit.h OB XSI ulimit - get and set process limits
-umask sys_stat.h umask - set and get the file mode creation mask
-uname sys_utsname.h uname - get the name of the current system
-ungetc stdio.h ungetc - push byte back into input stream
-ungetwc stdio.h wchar.h ungetwc - push wide-character code back into the input stream
-unlink unistd.h unlink, unlinkat - remove a directory entry relative to directory file descriptor
-unlinkat unistd.h unlink, unlinkat - remove a directory entry relative to directory file descriptor
-unlockpt stdlib.h XSI unlockpt - unlock a pseudo-terminal master/slave pair
-unsetenv stdlib.h CX unsetenv - remove an environment variable
-uselocale locale.h CX uselocale - use locale in current thread
-utime utime.h OB utime - set file access and modification times
-utimensat sys_stat.h sys_time.h XSI futimens, utimensat, utimes - set file access and modification times
-utimes sys_stat.h sys_time.h XSI futimens, utimensat, utimes - set file access and modification times
-va_arg stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list
-va_copy stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list
-va_end stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list
-va_start stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list
-vdprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list
-vfprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list
-vfscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list
-vfwprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list
-vfwscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list
-vprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list
-vscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list
-vsnprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list
-vsprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list
-vsscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list
-vswprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list
-vswscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list
-vwprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list
-vwscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list
-wait sys_wait.h wait, waitpid - wait for a child process to stop or terminate
-waitid sys_wait.h waitid - wait for a child process to change state
-waitpid sys_wait.h wait, waitpid - wait for a child process to stop or terminate
-wcpcpy wchar.h CX wcpcpy, wcscpy - copy a wide-character string, returning a pointer to its end
-wcpncpy wchar.h CX wcpncpy, wcsncpy - copy a fixed-size wide-character string, returning a pointer to its end
-wcrtomb stdio.h wcrtomb - convert a wide-character code to a character (restartable)
-wcscasecmp wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison
-wcscasecmp_l wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison
-wcscat wchar.h wcscat - concatenate two wide-character strings
-wcschr wchar.h wcschr - wide-character string scanning operation
-wcscmp wchar.h wcscmp - compare two wide-character strings
-wcscoll wchar.h CX wcscoll, wcscoll_l - wide-character string comparison using collating information
-wcscoll_l wchar.h CX wcscoll, wcscoll_l - wide-character string comparison using collating information
-wcscpy wchar.h CX wcpcpy, wcscpy - copy a wide-character string, returning a pointer to its end
-wcscspn wchar.h wcscspn - get the length of a complementary wide substring
-wcsdup wchar.h CX wcsdup - duplicate a wide-character string
-wcsftime wchar.h wcsftime - convert date and time to a wide-character string
-wcslen wchar.h CX wcslen, wcsnlen - get length of a fixed-sized wide-character string
-wcsncasecmp wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison
-wcsncasecmp_l wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison
-wcsncat wchar.h wcsncat - concatenate a wide-character string with part of another
-wcsncmp wchar.h wcsncmp - compare part of two wide-character strings
-wcsncpy wchar.h CX wcpncpy, wcsncpy - copy a fixed-size wide-character string, returning a pointer to its end
-wcsnlen wchar.h CX wcslen, wcsnlen - get length of a fixed-sized wide-character string
-wcsnrtombs wchar.h CX wcsnrtombs, wcsrtombs - convert a wide-character string to a character string (restartable)
-wcspbrk wchar.h wcspbrk - scan a wide-character string for a wide-character code
-wcsrchr wchar.h wcsrchr - wide-character string scanning operation
-wcsrtombs wchar.h CX wcsnrtombs, wcsrtombs - convert a wide-character string to a character string (restartable)
-wcsspn wchar.h wcsspn - get the length of a wide substring
-wcsstr wchar.h wcsstr - find a wide-character substring
-wcstod wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number
-wcstof wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number
-wcstoimax stddef.h inttypes.h wcstoimax, wcstoumax - convert a wide-character string to an integer type
-wcstok wchar.h wcstok - split a wide-character string into tokens
-wcstol wchar.h wcstol, wcstoll - convert a wide-character string to a long integer
-wcstold wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number
-wcstoll wchar.h wcstol, wcstoll - convert a wide-character string to a long integer
-wcstombs stdlib.h wcstombs - convert a wide-character string to a character string
-wcstoul wchar.h wcstoul, wcstoull - convert a wide-character string to an unsigned long
-wcstoull wchar.h wcstoul, wcstoull - convert a wide-character string to an unsigned long
-wcstoumax stddef.h inttypes.h wcstoimax, wcstoumax - convert a wide-character string to an integer type
-wcswidth wchar.h XSI wcswidth - number of column positions of a wide-character string
-wcsxfrm wchar.h CX wcsxfrm, wcsxfrm_l - wide-character string transformation
-wcsxfrm_l wchar.h CX wcsxfrm, wcsxfrm_l - wide-character string transformation
-wctob stdio.h wchar.h wctob - wide-character to single-byte conversion
-wctomb stdlib.h wctomb - convert a wide-character code to a character
-wctrans wctype.h CX wctrans, wctrans_l - define character mapping
-wctrans_l wctype.h CX wctrans, wctrans_l - define character mapping
-wctype wctype.h CX wctype, wctype_l - define character class
-wctype_l wctype.h CX wctype, wctype_l - define character class
-wcwidth wchar.h XSI wcwidth - number of column positions of a wide-character code
-wmemchr wchar.h wmemchr - find a wide character in memory
-wmemcmp wchar.h wmemcmp - compare wide characters in memory
-wmemcpy wchar.h wmemcpy - copy wide characters in memory
-wmemmove wchar.h wmemmove - copy wide characters in memory with overlapping areas
-wmemset wchar.h wmemset - set wide characters in memory
-wordexp wordexp.h wordexp, wordfree - perform word expansions
-wordfree wordexp.h wordexp, wordfree - perform word expansions
-wprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output
-write unistd.h pwrite, write - write on a file
-writev sys_uio.h XSI writev - write a vector
-wscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input
-y0 math.h XSI y0, y1, yn - Bessel functions of the second kind
-y1 math.h XSI y0, y1, yn - Bessel functions of the second kind
-yn math.h XSI y0, y1, yn - Bessel functions of the second kind
+FD_CLR sys/select.h pselect, select - synchronous I/O multiplexing void FD_CLR(int fd, fd_set *fdset);
+FD_ISSET sys/select.h pselect, select - synchronous I/O multiplexing int FD_ISSET(int fd, fd_set *fdset);
+FD_SET sys/select.h pselect, select - synchronous I/O multiplexing void FD_SET(int fd, fd_set *fdset);
+FD_ZERO sys/select.h pselect, select - synchronous I/O multiplexing void FD_ZERO(fd_set *fdset);
+_Exit stdlib.h unistd.h _Exit, _exit - terminate a process void _Exit(int status);
+_exit stdlib.h unistd.h _Exit, _exit - terminate a process void _exit(int status);
+_longjmp setjmp.h OB XSI _longjmp, _setjmp - non-local goto void _longjmp(jmp_buf env, int val);
+_setjmp setjmp.h OB XSI _longjmp, _setjmp - non-local goto int _setjmp(jmp_buf env);
+_tolower ctype.h OB XSI _tolower - transliterate uppercase characters to lowercase int _tolower(int c);
+_toupper ctype.h OB XSI _toupper - transliterate lowercase characters to uppercase int _toupper(int c);
+a64l stdlib.h XSI a64l, l64a - convert between a 32-bit integer and a radix-64 ASCII string long a64l(const char *s);
+abort stdlib.h abort - generate an abnormal process abort void abort(void);
+abs stdlib.h abs - return an integer absolute value int abs(int i);
+accept sys/socket.h accept - accept a new connection on a socket int accept(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);
+access unistd.h access, faccessat - determine accessibility of a file relative to directory file descriptor int access(const char *path, int amode);
+acos math.h acos, acosf, acosl - arc cosine functions double acos(double x);
+acosf math.h acos, acosf, acosl - arc cosine functions float acosf(float x);
+acosh math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions double acosh(double x);
+acoshf math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions float acoshf(float x);
+acoshl math.h acosh, acoshf, acoshl - inverse hyperbolic cosine functions long double acoshl(long double x);
+acosl math.h acos, acosf, acosl - arc cosine functions long double acosl(long double x);
+aio_cancel aio.h aio_cancel - cancel an asynchronous I/O request int aio_cancel(int fildes, struct aiocb *aiocbp);
+aio_error aio.h aio_error - retrieve errors status for an asynchronous I/O operation int aio_error(const struct aiocb *aiocbp);
+aio_fsync aio.h aio_fsync - asynchronous file synchronization int aio_fsync(int op, struct aiocb *aiocbp);
+aio_read aio.h aio_read - asynchronous read from a file int aio_read(struct aiocb *aiocbp);
+aio_return aio.h aio_return - retrieve return status of an asynchronous I/O operation ssize_t aio_return(struct aiocb *aiocbp);
+aio_suspend aio.h aio_suspend - wait for an asynchronous I/O request int aio_suspend(const struct aiocb *const list[], int nent, const struct timespec *timeout);
+aio_write aio.h aio_write - asynchronous write to a file int aio_write(struct aiocb *aiocbp);
+alarm unistd.h alarm - schedule an alarm signal unsigned alarm(unsigned seconds);
+alphasort dirent.h alphasort, scandir - scan a directory int alphasort(const struct dirent **d1, const struct dirent **d2);
+asctime time.h OB asctime, asctime_r - convert date and time to a string char *asctime(const struct tm *timeptr);
+asctime_r time.h OB CX asctime, asctime_r - convert date and time to a string char *asctime_r(const struct tm *restrict tm, char *restrict buf);
+asin math.h asin, asinf, asinl - arc sine function double asin(double x);
+asinf math.h asin, asinf, asinl - arc sine function float asinf(float x);
+asinh math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions double asinh(double x);
+asinhf math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions float asinhf(float x);
+asinhl math.h asinh, asinhf, asinhl - inverse hyperbolic sine functions long double asinhl(long double x);
+asinl math.h asin, asinf, asinl - arc sine function long double asinl(long double x);
+assert assert.h assert - insert program diagnostics void assert(scalar expression);
+atan math.h atan, atanf, atanl - arc tangent function double atan(double x);
+atan2 math.h atan2, atan2f, atan2l - arc tangent functions double atan2(double y, double x);
+atan2f math.h atan2, atan2f, atan2l - arc tangent functions float atan2f(float y, float x);
+atan2l math.h atan2, atan2f, atan2l - arc tangent functions long double atan2l(long double y, long double x);
+atanf math.h atan, atanf, atanl - arc tangent function float atanf(float x);
+atanh math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions double atanh(double x);
+atanhf math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions float atanhf(float x);
+atanhl math.h atanh, atanhf, atanhl - inverse hyperbolic tangent functions long double atanhl(long double x);
+atanl math.h atan, atanf, atanl - arc tangent function long double atanl(long double x);
+atexit stdlib.h atexit - register a function to run at process termination int atexit(void (*func)(void));
+atof stdlib.h atof - convert a string to a double-precision number double atof(const char *str);
+atoi stdlib.h atoi - convert a string to an integer int atoi(const char *str);
+atol stdlib.h atol, atoll - convert a string to a long integer long atol(const char *str);
+atoll stdlib.h atol, atoll - convert a string to a long integer long long atoll(const char *nptr);
+basename libgen.h XSI basename - return the last component of a pathname char *basename(char *path);
+bind sys/socket.h bind - bind a name to a socket int bind(int socket, const struct sockaddr *address, socklen_t address_len);
+bsearch stdlib.h bsearch - binary search a sorted table void *bsearch(const void *key, const void *base, size_t nel, size_t width, int (*compar)(const void *, const void *));
+btowc stdio.h wchar.h btowc - single byte to wide character conversion wint_t btowc(int c);
+cabs complex.h cabs, cabsf, cabsl - return a complex absolute value double cabs(double complex z);
+cabsf complex.h cabs, cabsf, cabsl - return a complex absolute value float cabsf(float complex z);
+cabsl complex.h cabs, cabsf, cabsl - return a complex absolute value long double cabsl(long double complex z);
+cacos complex.h cacos, cacosf, cacosl - complex arc cosine functions double complex cacos(double complex z);
+cacosf complex.h cacos, cacosf, cacosl - complex arc cosine functions float complex cacosf(float complex z);
+cacosh complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions double complex cacosh(double complex z);
+cacoshf complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions float complex cacoshf(float complex z);
+cacoshl complex.h cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions long double complex cacoshl(long double complex z);
+cacosl complex.h cacos, cacosf, cacosl - complex arc cosine functions long double complex cacosl(long double complex z);
+calloc stdlib.h calloc - a memory allocator void *calloc(size_t nelem, size_t elsize);
+carg complex.h carg, cargf, cargl - complex argument functions double carg(double complex z);
+cargf complex.h carg, cargf, cargl - complex argument functions float cargf(float complex z);
+cargl complex.h carg, cargf, cargl - complex argument functions long double cargl(long double complex z);
+casin complex.h casin, casinf, casinl - complex arc sine functions double complex casin(double complex z);
+casinf complex.h casin, casinf, casinl - complex arc sine functions float complex casinf(float complex z);
+casinh complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions double complex casinh(double complex z);
+casinhf complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions float complex casinhf(float complex z);
+casinhl complex.h casinh, casinhf, casinhl - complex arc hyperbolic sine functions long double complex casinhl(long double complex z);
+casinl complex.h casin, casinf, casinl - complex arc sine functions long double complex casinl(long double complex z);
+catan complex.h catan, catanf, catanl - complex arc tangent functions double complex catan(double complex z);
+catanf complex.h catan, catanf, catanl - complex arc tangent functions float complex catanf(float complex z);
+catanh complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions double complex catanh(double complex z);
+catanhf complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions float complex catanhf(float complex z);
+catanhl complex.h catanh, catanhf, catanhl - complex arc hyperbolic tangent functions long double complex catanhl(long double complex z);
+catanl complex.h catan, catanf, catanl - complex arc tangent functions long double complex catanl(long double complex z);
+catclose nl_types.h catclose - close a message catalog descriptor int catclose(nl_catd catd);
+catgets nl_types.h catgets - read a program message char *catgets(nl_catd catd, int set_id, int msg_id, const char *s);
+catopen nl_types.h catopen - open a message catalog nl_catd catopen(const char *name, int oflag);
+cbrt math.h cbrt, cbrtf, cbrtl - cube root functions double cbrt(double x);
+cbrtf math.h cbrt, cbrtf, cbrtl - cube root functions float cbrtf(float x);
+cbrtl math.h cbrt, cbrtf, cbrtl - cube root functions long double cbrtl(long double x);
+ccos complex.h ccos, ccosf, ccosl - complex cosine functions double complex ccos(double complex z);
+ccosf complex.h ccos, ccosf, ccosl - complex cosine functions float complex ccosf(float complex z);
+ccosh complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions double complex ccosh(double complex z);
+ccoshf complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions float complex ccoshf(float complex z);
+ccoshl complex.h ccosh, ccoshf, ccoshl - complex hyperbolic cosine functions long double complex ccoshl(long double complex z);
+ccosl complex.h ccos, ccosf, ccosl - complex cosine functions long double complex ccosl(long double complex z);
+ceil math.h ceil, ceilf, ceill - ceiling value function double ceil(double x);
+ceilf math.h ceil, ceilf, ceill - ceiling value function float ceilf(float x);
+ceill math.h ceil, ceilf, ceill - ceiling value function long double ceill(long double x);
+cexp complex.h cexp, cexpf, cexpl - complex exponential functions double complex cexp(double complex z);
+cexpf complex.h cexp, cexpf, cexpl - complex exponential functions float complex cexpf(float complex z);
+cexpl complex.h cexp, cexpf, cexpl - complex exponential functions long double complex cexpl(long double complex z);
+cfgetispeed termios.h cfgetispeed - get input baud rate speed_t cfgetispeed(const struct termios *termios_p);
+cfgetospeed termios.h cfgetospeed - get output baud rate speed_t cfgetospeed(const struct termios *termios_p);
+cfsetispeed termios.h cfsetispeed - set input baud rate int cfsetispeed(struct termios *termios_p, speed_t speed);
+cfsetospeed termios.h cfsetospeed - set output baud rate int cfsetospeed(struct termios *termios_p, speed_t speed);
+chdir unistd.h chdir - change working directory int chdir(const char *path);
+chmod sys/stat.h chmod, fchmodat - change mode of a file relative to directory file descriptor int chmod(const char *path, mode_t mode);
+chown unistd.h chown, fchownat - change owner and group of a file relative to directory file descriptor int chown(const char *path, uid_t owner, gid_t group);
+cimag complex.h cimag, cimagf, cimagl - complex imaginary functions double cimag(double complex z);
+cimagf complex.h cimag, cimagf, cimagl - complex imaginary functions float cimagf(float complex z);
+cimagl complex.h cimag, cimagf, cimagl - complex imaginary functions long double cimagl(long double complex z);
+clearerr stdio.h clearerr - clear indicators on a stream void clearerr(FILE *stream);
+clock time.h clock - report CPU time used clock_t clock(void);
+clock_getcpuclockid time.h CPT clock_getcpuclockid - access a process CPU-time clock (<b>ADVANCED REALTIME</b>) int clock_getcpuclockid(pid_t pid, clockid_t *clock_id);
+clock_getres time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions int clock_getres(clockid_t clock_id, struct timespec *res);
+clock_gettime time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions int clock_gettime(clockid_t clock_id, struct timespec *tp);
+clock_nanosleep time.h CX clock_nanosleep - high resolution sleep with specifiable clock int clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *rqtp, struct timespec *rmtp);
+clock_settime time.h CX clock_getres, clock_gettime, clock_settime - clock and timer functions int clock_settime(clockid_t clock_id, const struct timespec *tp);
+clog complex.h clog, clogf, clogl - complex natural logarithm functions double complex clog(double complex z);
+clogf complex.h clog, clogf, clogl - complex natural logarithm functions float complex clogf(float complex z);
+clogl complex.h clog, clogf, clogl - complex natural logarithm functions long double complex clogl(long double complex z);
+close unistd.h close - close a file descriptor int close(int fildes);
+closedir dirent.h closedir - close a directory stream int closedir(DIR *dirp);
+closelog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log void closelog(void);
+confstr unistd.h confstr - get configurable variables size_t confstr(int name, char *buf, size_t len);
+conj complex.h conj, conjf, conjl - complex conjugate functions double complex conj(double complex z);
+conjf complex.h conj, conjf, conjl - complex conjugate functions float complex conjf(float complex z);
+conjl complex.h conj, conjf, conjl - complex conjugate functions long double complex conjl(long double complex z);
+connect sys/socket.h connect - connect a socket int connect(int socket, const struct sockaddr *address, socklen_t address_len);
+copysign math.h copysign, copysignf, copysignl - number manipulation function double copysign(double x, double y);
+copysignf math.h copysign, copysignf, copysignl - number manipulation function float copysignf(float x, float y);
+copysignl math.h copysign, copysignf, copysignl - number manipulation function long double copysignl(long double x, long double y);
+cos math.h cos, cosf, cosl - cosine function double cos(double x);
+cosf math.h cos, cosf, cosl - cosine function float cosf(float x);
+cosh math.h cosh, coshf, coshl - hyperbolic cosine functions double cosh(double x);
+coshf math.h cosh, coshf, coshl - hyperbolic cosine functions float coshf(float x);
+coshl math.h cosh, coshf, coshl - hyperbolic cosine functions long double coshl(long double x);
+cosl math.h cos, cosf, cosl - cosine function long double cosl(long double x);
+cpow complex.h cpow, cpowf, cpowl - complex power functions double complex cpow(double complex x, double complex y);
+cpowf complex.h cpow, cpowf, cpowl - complex power functions float complex cpowf(float complex x, float complex y);
+cpowl complex.h cpow, cpowf, cpowl - complex power functions long double complex cpowl(long double complex x, long double complex y);
+cproj complex.h cproj, cprojf, cprojl - complex projection functions double complex cproj(double complex z);
+cprojf complex.h cproj, cprojf, cprojl - complex projection functions float complex cprojf(float complex z);
+cprojl complex.h cproj, cprojf, cprojl - complex projection functions long double complex cprojl(long double complex z);
+creal complex.h creal, crealf, creall - complex real functions double creal(double complex z);
+crealf complex.h creal, crealf, creall - complex real functions float crealf(float complex z);
+creall complex.h creal, crealf, creall - complex real functions long double creall(long double complex z);
+creat sys/stat.h fcntl.h OH creat - create a new file or rewrite an existing one int creat(const char *path, mode_t mode);
+crypt unistd.h XSI crypt - string encoding function (<b>CRYPT</b>) char *crypt(const char *key, const char *salt);
+csin complex.h csin, csinf, csinl - complex sine functions double complex csin(double complex z);
+csinf complex.h csin, csinf, csinl - complex sine functions float complex csinf(float complex z);
+csinh complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions double complex csinh(double complex z);
+csinhf complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions float complex csinhf(float complex z);
+csinhl complex.h csinh, csinhf, csinhl - complex hyperbolic sine functions long double complex csinhl(long double complex z);
+csinl complex.h csin, csinf, csinl - complex sine functions long double complex csinl(long double complex z);
+csqrt complex.h csqrt, csqrtf, csqrtl - complex square root functions double complex csqrt(double complex z);
+csqrtf complex.h csqrt, csqrtf, csqrtl - complex square root functions float complex csqrtf(float complex z);
+csqrtl complex.h csqrt, csqrtf, csqrtl - complex square root functions long double complex csqrtl(long double complex z);
+ctan complex.h ctan, ctanf, ctanl - complex tangent functions double complex ctan(double complex z);
+ctanf complex.h ctan, ctanf, ctanl - complex tangent functions float complex ctanf(float complex z);
+ctanh complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions double complex ctanh(double complex z);
+ctanhf complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions float complex ctanhf(float complex z);
+ctanhl complex.h ctanh, ctanhf, ctanhl - complex hyperbolic tangent functions long double complex ctanhl(long double complex z);
+ctanl complex.h ctan, ctanf, ctanl - complex tangent functions long double complex ctanl(long double complex z);
+ctermid stdio.h CX ctermid - generate a pathname for the controlling terminal char *ctermid(char *s);
+ctime time.h OB ctime, ctime_r - convert a time value to a date and time string char *ctime(const time_t *clock);
+ctime_r time.h OB CX ctime, ctime_r - convert a time value to a date and time string char *ctime_r(const time_t *clock, char *buf);
+daylight time.h XSI daylight, timezone, tzname, tzset - set timezone conversion information
+dbm_clearerr ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions int dbm_clearerr(DBM *db);
+dbm_close ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions void dbm_close(DBM *db);
+dbm_delete ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions int dbm_delete(DBM *db, datum key);
+dbm_error ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions int dbm_error(DBM *db);
+dbm_fetch ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions datum dbm_fetch(DBM *db, datum key);
+dbm_firstkey ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions datum dbm_firstkey(DBM *db);
+dbm_nextkey ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions datum dbm_nextkey(DBM *db);
+dbm_open ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions DBM *dbm_open(const char *file, int open_flags, mode_t file_mode);
+dbm_store ndbm.h XSI dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store - database functions int dbm_store(DBM *db, datum key, datum content, int store_mode);
+difftime time.h difftime - compute the difference between two calendar time values double difftime(time_t time1, time_t time0);
+dirfd dirent.h dirfd - extract the file descriptor used by a DIR stream int dirfd(DIR *dirp);
+dirname libgen.h XSI dirname - report the parent directory name of a file pathname char *dirname(char *path);
+div stdlib.h div - compute the quotient and remainder of an integer division div_t div(int numer, int denom);
+dlclose dlfcn.h dlclose - close a dlopen object int dlclose(void *handle);
+dlerror dlfcn.h dlerror - get diagnostic information char *dlerror(void);
+dlopen dlfcn.h dlopen - gain access to an executable object file void *dlopen(const char *file, int mode);
+dlsym dlfcn.h dlsym - obtain the address of a symbol from a dlopen object void *dlsym(void *restrict handle, const char *restrict name);
+dprintf stdio.h CX dprintf, fprintf, printf, snprintf, sprintf - print formatted output int dprintf(int fildes, const char *restrict format, ...);
+drand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers double drand48(void);
+dup unistd.h dup, dup2 - duplicate an open file descriptor int dup(int fildes);
+dup2 unistd.h dup, dup2 - duplicate an open file descriptor int dup2(int fildes, int fildes2);
+duplocale locale.h CX duplocale - duplicate a locale object locale_t duplocale(locale_t locobj);
+encrypt unistd.h XSI encrypt - encoding function (<b>CRYPT</b>) void encrypt(char block[64], int edflag);
+endgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions void endgrent(void);
+endhostent netdb.h endhostent, gethostent, sethostent - network host database functions void endhostent(void);
+endnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions void endnetent(void);
+endprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions void endprotoent(void);
+endpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions void endpwent(void);
+endservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions void endservent(void);
+endutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions void endutxent(void);
+environ unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
+erand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers double erand48(unsigned short xsubi[3]);
+erf math.h erf, erff, erfl - error functions double erf(double x);
+erfc math.h erfc, erfcf, erfcl - complementary error functions double erfc(double x);
+erfcf math.h erfc, erfcf, erfcl - complementary error functions float erfcf(float x);
+erfcl math.h erfc, erfcf, erfcl - complementary error functions long double erfcl(long double x);
+erff math.h erf, erff, erfl - error functions float erff(float x);
+erfl math.h erf, erff, erfl - error functions long double erfl(long double x);
+errno errno.h errno - error return value
+execl unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execl(const char *path, const char *arg0, ... /*, (char *)0 */);
+execle unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execle(const char *path, const char *arg0, ... /*, (char *)0, char *const envp[]*/);
+execlp unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execlp(const char *file, const char *arg0, ... /*, (char *)0 */);
+execv unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execv(const char *path, char *const argv[]);
+execve unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execve(const char *path, char *const argv[], char *const envp[]);
+execvp unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int execvp(const char *file, char *const argv[]);
+exit stdlib.h exit - terminate a process void exit(int status);
+exp math.h exp, expf, expl - exponential function double exp(double x);
+exp2 math.h exp2, exp2f, exp2l - exponential base 2 functions double exp2(double x);
+exp2f math.h exp2, exp2f, exp2l - exponential base 2 functions float exp2f(float x);
+exp2l math.h exp2, exp2f, exp2l - exponential base 2 functions long double exp2l(long double x);
+expf math.h exp, expf, expl - exponential function float expf(float x);
+expl math.h exp, expf, expl - exponential function long double expl(long double x);
+expm1 math.h expm1, expm1f, expm1l - compute exponential functions double expm1(double x);
+expm1f math.h expm1, expm1f, expm1l - compute exponential functions float expm1f(float x);
+expm1l math.h expm1, expm1f, expm1l - compute exponential functions long double expm1l(long double x);
+fabs math.h fabs, fabsf, fabsl - absolute value function double fabs(double x);
+fabsf math.h fabs, fabsf, fabsl - absolute value function float fabsf(float x);
+fabsl math.h fabs, fabsf, fabsl - absolute value function long double fabsl(long double x);
+faccessat unistd.h access, faccessat - determine accessibility of a file relative to directory file descriptor int faccessat(int fd, const char *path, int amode, int flag);
+fchdir unistd.h fchdir - change working directory int fchdir(int fildes);
+fchmod sys/stat.h fchmod - change mode of a file int fchmod(int fildes, mode_t mode);
+fchmodat sys/stat.h chmod, fchmodat - change mode of a file relative to directory file descriptor int fchmodat(int fd, const char *path, mode_t mode, int flag);
+fchown unistd.h fchown - change owner and group of a file int fchown(int fildes, uid_t owner, gid_t group);
+fchownat unistd.h chown, fchownat - change owner and group of a file relative to directory file descriptor int fchownat(int fd, const char *path, uid_t owner, gid_t group, int flag);
+fclose stdio.h fclose - close a stream int fclose(FILE *stream);
+fcntl fcntl.h fcntl - file control int fcntl(int fildes, int cmd, ...);
+fdatasync unistd.h SIO fdatasync - synchronize the data of a file (<b>REALTIME</b>) int fdatasync(int fildes);
+fdim math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers double fdim(double x, double y);
+fdimf math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers float fdimf(float x, float y);
+fdiml math.h fdim, fdimf, fdiml - compute positive difference between two floating-point numbers long double fdiml(long double x, long double y);
+fdopen stdio.h CX fdopen - associate a stream with a file descriptor FILE *fdopen(int fildes, const char *mode);
+fdopendir dirent.h fdopendir, opendir - open directory associated with file descriptor DIR *fdopendir(int fd);
+feclearexcept fenv.h feclearexcept - clear floating-point exception int feclearexcept(int excepts);
+fegetenv fenv.h fegetenv, fesetenv - get and set current floating-point environment int fegetenv(fenv_t *envp);
+fegetexceptflag fenv.h fegetexceptflag, fesetexceptflag - get and set floating-point status flags int fegetexceptflag(fexcept_t *flagp, int excepts);
+fegetround fenv.h fegetround, fesetround - get and set current rounding direction int fegetround(void);
+feholdexcept fenv.h feholdexcept - save current floating-point environment int feholdexcept(fenv_t *envp);
+feof stdio.h feof - test end-of-file indicator on a stream int feof(FILE *stream);
+feraiseexcept fenv.h feraiseexcept - raise floating-point exception int feraiseexcept(int excepts);
+ferror stdio.h ferror - test error indicator on a stream int ferror(FILE *stream);
+fesetenv fenv.h fegetenv, fesetenv - get and set current floating-point environment int fesetenv(const fenv_t *envp);
+fesetexceptflag fenv.h fegetexceptflag, fesetexceptflag - get and set floating-point status flags int fesetexceptflag(const fexcept_t *flagp, int excepts);
+fesetround fenv.h fegetround, fesetround - get and set current rounding direction int fesetround(int round);
+fetestexcept fenv.h fetestexcept - test floating-point exception flags int fetestexcept(int excepts);
+feupdateenv fenv.h feupdateenv - update floating-point environment int feupdateenv(const fenv_t *envp);
+fexecve unistd.h environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file int fexecve(int fd, char *const argv[], char *const envp[]);
+fflush stdio.h fflush - flush a stream int fflush(FILE *stream);
+ffs strings.h XSI ffs - find first set bit int ffs(int i);
+fgetc stdio.h fgetc - get a byte from a stream int fgetc(FILE *stream);
+fgetpos stdio.h fgetpos - get current file position information int fgetpos(FILE *restrict stream, fpos_t *restrict pos);
+fgets stdio.h fgets - get a string from a stream char *fgets(char *restrict s, int n, FILE *restrict stream);
+fgetwc stdio.h wchar.h fgetwc - get a wide-character code from a stream wint_t fgetwc(FILE *stream);
+fgetws stdio.h wchar.h fgetws - get a wide-character string from a stream wchar_t *fgetws(wchar_t *restrict ws, int n, FILE *restrict stream);
+fileno stdio.h CX fileno - map a stream pointer to a file descriptor int fileno(FILE *stream);
+flockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions void flockfile(FILE *file);
+floor math.h floor, floorf, floorl - floor function double floor(double x);
+floorf math.h floor, floorf, floorl - floor function float floorf(float x);
+floorl math.h floor, floorf, floorl - floor function long double floorl(long double x);
+fma math.h fma, fmaf, fmal - floating-point multiply-add double fma(double x, double y, double z);
+fmaf math.h fma, fmaf, fmal - floating-point multiply-add float fmaf(float x, float y, float z);
+fmal math.h fma, fmaf, fmal - floating-point multiply-add long double fmal(long double x, long double y, long double z);
+fmax math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers double fmax(double x, double y);
+fmaxf math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers float fmaxf(float x, float y);
+fmaxl math.h fmax, fmaxf, fmaxl - determine maximum numeric value of two floating-point numbers long double fmaxl(long double x, long double y);
+fmemopen stdio.h CX fmemopen - open a memory buffer stream FILE *fmemopen(void *restrict buf, size_t size, const char *restrict mode);
+fmin math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers double fmin(double x, double y);
+fminf math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers float fminf(float x, float y);
+fminl math.h fmin, fminf, fminl - determine minimum numeric value of two floating-point numbers long double fminl(long double x, long double y);
+fmod math.h fmod, fmodf, fmodl - floating-point remainder value function double fmod(double x, double y);
+fmodf math.h fmod, fmodf, fmodl - floating-point remainder value function float fmodf(float x, float y);
+fmodl math.h fmod, fmodf, fmodl - floating-point remainder value function long double fmodl(long double x, long double y);
+fmtmsg fmtmsg.h XSI fmtmsg - display a message in the specified format on standard error and/or a system console int fmtmsg(long classification, const char *label, int severity, const char *text, const char *action, const char *tag);
+fnmatch fnmatch.h fnmatch - match a filename or a pathname int fnmatch(const char *pattern, const char *string, int flags);
+fopen stdio.h fopen - open a stream FILE *fopen(const char *restrict filename, const char *restrict mode);
+fork unistd.h fork - create a new process pid_t fork(void);
+fpathconf unistd.h fpathconf, pathconf - get configurable pathname variables long fpathconf(int fildes, int name);
+fpclassify math.h fpclassify - classify real floating type int fpclassify(real-floating x);
+fprintf stdio.h dprintf, fprintf, printf, snprintf, sprintf - print formatted output int fprintf(FILE *restrict stream, const char *restrict format, ...);
+fputc stdio.h fputc - put a byte on a stream int fputc(int c, FILE *stream);
+fputs stdio.h fputs - put a string on a stream int fputs(const char *restrict s, FILE *restrict stream);
+fputwc stdio.h wchar.h fputwc - put a wide-character code on a stream wint_t fputwc(wchar_t wc, FILE *stream);
+fputws stdio.h wchar.h fputws - put a wide-character string on a stream int fputws(const wchar_t *restrict ws, FILE *restrict stream);
+fread stdio.h fread - binary input size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream);
+free stdlib.h free - free allocated memory void free(void *ptr);
+freeaddrinfo sys/socket.h netdb.h freeaddrinfo, getaddrinfo - get address information void freeaddrinfo(struct addrinfo *ai);
+freelocale locale.h CX freelocale - free resources allocated for a locale object void freelocale(locale_t locobj);
+freopen stdio.h freopen - open a stream FILE *freopen(const char *restrict filename, const char *restrict mode, FILE *restrict stream);
+frexp math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number double frexp(double num, int *exp);
+frexpf math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number float frexpf(float num, int *exp);
+frexpl math.h frexp, frexpf, frexpl - extract mantissa and exponent from a double precision number long double frexpl(long double num, int *exp);
+fscanf stdio.h fscanf, scanf, sscanf - convert formatted input int fscanf(FILE *restrict stream, const char *restrict format, ...);
+fseek stdio.h fseek, fseeko - reposition a file-position indicator in a stream int fseek(FILE *stream, long offset, int whence);
+fseeko stdio.h CX fseek, fseeko - reposition a file-position indicator in a stream int fseeko(FILE *stream, off_t offset, int whence);
+fsetpos stdio.h fsetpos - set current file position int fsetpos(FILE *stream, const fpos_t *pos);
+fstat sys/stat.h fstat - get file status int fstat(int fildes, struct stat *buf);
+fstatat sys/stat.h fstatat, lstat, stat - get file status int fstatat(int fd, const char *restrict path, struct stat *restrict buf, int flag);
+fstatvfs sys/statvfs.h fstatvfs, statvfs - get file system information int fstatvfs(int fildes, struct statvfs *buf);
+fsync unistd.h FSC fsync - synchronize changes to a file int fsync(int fildes);
+ftell stdio.h ftell, ftello - return a file offset in a stream long ftell(FILE *stream);
+ftello stdio.h CX ftell, ftello - return a file offset in a stream off_t ftello(FILE *stream);
+ftok sys/ipc.h XSI ftok - generate an IPC key key_t ftok(const char *path, int id);
+ftruncate unistd.h ftruncate - truncate a file to a specified length int ftruncate(int fildes, off_t length);
+ftrylockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions int ftrylockfile(FILE *file);
+ftw ftw.h OB XSI ftw - traverse (walk) a file tree int ftw(const char *path, int (*fn)(const char *, const struct stat *ptr, int flag), int ndirs);
+funlockfile stdio.h CX flockfile, ftrylockfile, funlockfile - stdio locking functions void funlockfile(FILE *file);
+futimens sys/stat.h sys/time.h futimens, utimensat, utimes - set file access and modification times int futimens(int fd, const struct timespec times[2]);
+fwide stdio.h wchar.h fwide - set stream orientation int fwide(FILE *stream, int mode);
+fwprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output int fwprintf(FILE *restrict stream, const wchar_t *restrict format, ...);
+fwrite stdio.h fwrite - binary output size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream);
+fwscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input int fwscanf(FILE *restrict stream, const wchar_t *restrict format, ...);
+gai_strerror netdb.h gai_strerror - address and name information error description const char *gai_strerror(int ecode);
+getaddrinfo sys/socket.h netdb.h freeaddrinfo, getaddrinfo - get address information int getaddrinfo(const char *restrict nodename, const char *restrict servname, const struct addrinfo *restrict hints, struct addrinfo **restrict res);
+getc stdio.h getc - get a byte from a stream int getc(FILE *stream);
+getc_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking int getc_unlocked(FILE *stream);
+getchar stdio.h getchar - get a byte from a .I stdin stream int getchar(void);
+getchar_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking int getchar_unlocked(void);
+getcwd unistd.h getcwd - get the pathname of the current working directory char *getcwd(char *buf, size_t size);
+getdate time.h XSI getdate - convert user format date and time struct tm *getdate(const char *string);
+getdate_err time.h XSI getdate - convert user format date and time
+getdelim stdio.h CX getdelim, getline - read a delimited record from .I stream ssize_t getdelim(char **restrict lineptr, size_t *restrict n, int delimiter, FILE *restrict stream);
+getegid unistd.h getegid - get the effective group ID gid_t getegid(void);
+getenv stdlib.h getenv - get value of an environment variable char *getenv(const char *name);
+geteuid unistd.h geteuid - get the effective user ID uid_t geteuid(void);
+getgid unistd.h getgid - get the real group ID gid_t getgid(void);
+getgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions struct group *getgrent(void);
+getgrgid grp.h getgrgid, getgrgid_r - get group database entry for a group ID struct group *getgrgid(gid_t gid);
+getgrgid_r grp.h getgrgid, getgrgid_r - get group database entry for a group ID int getgrgid_r(gid_t gid, struct group *grp, char *buffer, size_t bufsize, struct group **result);
+getgrnam grp.h getgrnam, getgrnam_r - search group database for a name struct group *getgrnam(const char *name);
+getgrnam_r grp.h getgrnam, getgrnam_r - search group database for a name int getgrnam_r(const char *name, struct group *grp, char *buffer, size_t bufsize, struct group **result);
+getgroups unistd.h getgroups - get supplementary group IDs int getgroups(int gidsetsize, gid_t grouplist[]);
+gethostent netdb.h endhostent, gethostent, sethostent - network host database functions struct hostent *gethostent(void);
+gethostid unistd.h XSI gethostid - get an identifier for the current host long gethostid(void);
+gethostname unistd.h gethostname - get name of current host int gethostname(char *name, size_t namelen);
+getitimer sys/time.h OB XSI getitimer, setitimer - get and set value of interval timer int getitimer(int which, struct itimerval *value);
+getline stdio.h CX getdelim, getline - read a delimited record from .I stream ssize_t getline(char **restrict lineptr, size_t *restrict n, FILE *restrict stream);
+getlogin unistd.h getlogin, getlogin_r - get login name char *getlogin(void);
+getlogin_r unistd.h getlogin, getlogin_r - get login name int getlogin_r(char *name, size_t namesize);
+getnameinfo sys/socket.h netdb.h getnameinfo - get name information int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen, char *restrict node, socklen_t nodelen, char *restrict service, socklen_t servicelen, int flags);
+getnetbyaddr netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions struct netent *getnetbyaddr(uint32_t net, int type);
+getnetbyname netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions struct netent *getnetbyname(const char *name);
+getnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions struct netent *getnetent(void);
+getopt unistd.h getopt, optarg, opterr, optind, optopt - command option parsing int getopt(int argc, char * const argv[], const char *optstring);
+getpeername sys/socket.h getpeername - get the name of the peer socket int getpeername(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);
+getpgid unistd.h getpgid - get the process group ID for a process pid_t getpgid(pid_t pid);
+getpgrp unistd.h getpgrp - get the process group ID of the calling process pid_t getpgrp(void);
+getpid unistd.h getpid - get the process ID pid_t getpid(void);
+getppid unistd.h getppid - get the parent process ID pid_t getppid(void);
+getpriority sys/resource.h XSI getpriority, setpriority - get and set the nice value int getpriority(int which, id_t who);
+getprotobyname netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions struct protoent *getprotobyname(const char *name);
+getprotobynumber netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions struct protoent *getprotobynumber(int proto);
+getprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions struct protoent *getprotoent(void);
+getpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions struct passwd *getpwent(void);
+getpwnam pwd.h getpwnam, getpwnam_r - search user database for a name struct passwd *getpwnam(const char *name);
+getpwnam_r pwd.h getpwnam, getpwnam_r - search user database for a name int getpwnam_r(const char *name, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result);
+getpwuid pwd.h getpwuid, getpwuid_r - search user database for a user ID struct passwd *getpwuid(uid_t uid);
+getpwuid_r pwd.h getpwuid, getpwuid_r - search user database for a user ID int getpwuid_r(uid_t uid, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result);
+getrlimit sys/resource.h XSI getrlimit, setrlimit - control maximum resource consumption int getrlimit(int resource, struct rlimit *rlp);
+getrusage sys/resource.h XSI getrusage - get information about resource utilization int getrusage(int who, struct rusage *r_usage);
+gets stdio.h OB gets - get a string from a .I stdin stream char *gets(char *s);
+getservbyname netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions struct servent *getservbyname(const char *name, const char *proto);
+getservbyport netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions struct servent *getservbyport(int port, const char *proto);
+getservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions struct servent *getservent(void);
+getsid unistd.h getsid - get the process group ID of a session leader pid_t getsid(pid_t pid);
+getsockname sys/socket.h getsockname - get the socket name int getsockname(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);
+getsockopt sys/socket.h getsockopt - get the socket options int getsockopt(int socket, int level, int option_name, void *restrict option_value, socklen_t *restrict option_len);
+getsubopt stdlib.h getsubopt - parse suboption arguments from a string int getsubopt(char **optionp, char * const *keylistp, char **valuep);
+gettimeofday sys/time.h OB XSI gettimeofday - get the date and time int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
+getuid unistd.h getuid - get a real user ID uid_t getuid(void);
+getutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions struct utmpx *getutxent(void);
+getutxid utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions struct utmpx *getutxid(const struct utmpx *id);
+getutxline utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions struct utmpx *getutxline(const struct utmpx *line);
+getwc stdio.h wchar.h getwc - get a wide character from a stream wint_t getwc(FILE *stream);
+getwchar wchar.h getwchar - get a wide character from a .I stdin stream wint_t getwchar(void);
+glob glob.h glob, globfree - generate pathnames matching a pattern int glob(const char *restrict pattern, int flags, int(*errfunc)(const char *epath, int eerrno), glob_t *restrict pglob);
+globfree glob.h glob, globfree - generate pathnames matching a pattern void globfree(glob_t *pglob);
+gmtime time.h gmtime, gmtime_r - convert a time value to a broken-down UTC time struct tm *gmtime(const time_t *timer);
+gmtime_r time.h CX gmtime, gmtime_r - convert a time value to a broken-down UTC time struct tm *gmtime_r(const time_t *restrict timer, struct tm *restrict result);
+grantpt stdlib.h XSI grantpt - grant access to the slave pseudo-terminal device int grantpt(int fildes);
+hcreate search.h XSI hcreate, hdestroy, hsearch - manage hash search table int hcreate(size_t nel);
+hdestroy search.h XSI hcreate, hdestroy, hsearch - manage hash search table void hdestroy(void);
+hsearch search.h XSI hcreate, hdestroy, hsearch - manage hash search table ENTRY *hsearch(ENTRY item, ACTION action);
+htonl arpa/inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order uint32_t htonl(uint32_t hostlong);
+htons arpa/inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order uint16_t htons(uint16_t hostshort);
+hypot math.h hypot, hypotf, hypotl - Euclidean distance function double hypot(double x, double y);
+hypotf math.h hypot, hypotf, hypotl - Euclidean distance function float hypotf(float x, float y);
+hypotl math.h hypot, hypotf, hypotl - Euclidean distance function long double hypotl(long double x, long double y);
+iconv iconv.h iconv - codeset conversion function size_t iconv(iconv_t cd, char **restrict inbuf, size_t *restrict inbytesleft, char **restrict outbuf, size_t *restrict outbytesleft);
+iconv_close iconv.h iconv_close - codeset conversion deallocation function int iconv_close(iconv_t cd);
+iconv_open iconv.h iconv_open - codeset conversion allocation function iconv_t iconv_open(const char *tocode, const char *fromcode);
+if_freenameindex net/if.h if_freenameindex - free memory allocated by if_nameindex void if_freenameindex(struct if_nameindex *ptr);
+if_indextoname net/if.h if_indextoname - map a network interface index to its corresponding name char *if_indextoname(unsigned ifindex, char *ifname);
+if_nameindex net/if.h if_nameindex - return all network interface names and indexes struct if_nameindex *if_nameindex(void);
+if_nametoindex net/if.h if_nametoindex - map a network interface name to its corresponding index unsigned if_nametoindex(const char *ifname);
+ilogb math.h ilogb, ilogbf, ilogbl - return an unbiased exponent int ilogb(double x);
+ilogbf math.h ilogb, ilogbf, ilogbl - return an unbiased exponent int ilogbf(float x);
+ilogbl math.h ilogb, ilogbf, ilogbl - return an unbiased exponent int ilogbl(long double x);
+imaxabs inttypes.h imaxabs - return absolute value intmax_t imaxabs(intmax_t j);
+imaxdiv inttypes.h imaxdiv - return quotient and remainder imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom);
+inet_addr arpa/inet.h inet_addr, inet_ntoa - IPv4 address manipulation in_addr_t inet_addr(const char *cp);
+inet_ntoa arpa/inet.h inet_addr, inet_ntoa - IPv4 address manipulation char *inet_ntoa(struct in_addr in);
+inet_ntop arpa/inet.h inet_ntop, inet_pton - convert IPv4 and IPv6 addresses between binary and text form const char *inet_ntop(int af, const void *restrict src, char *restrict dst, socklen_t size);
+inet_pton arpa/inet.h inet_ntop, inet_pton - convert IPv4 and IPv6 addresses between binary and text form int inet_pton(int af, const char *restrict src, void *restrict dst);
+initstate stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions char *initstate(unsigned seed, char *state, size_t size);
+insque search.h XSI insque, remque - insert or remove an element in a queue void insque(void *element, void *pred);
+isalnum ctype.h isalnum, isalnum_l - test for an alphanumeric character int isalnum(int c);
+isalnum_l ctype.h CX isalnum, isalnum_l - test for an alphanumeric character int isalnum_l(int c, locale_t locale);
+isalpha ctype.h isalpha, isalpha_l - test for an alphabetic character int isalpha(int c);
+isalpha_l ctype.h CX isalpha, isalpha_l - test for an alphabetic character int isalpha_l(int c, locale_t locale);
+isascii ctype.h OB XSI isascii - test for a 7-bit US-ASCII character int isascii(int c);
+isatty unistd.h isatty - test for a terminal device int isatty(int fildes);
+isblank ctype.h isblank, isblank_l - test for a blank character int isblank(int c);
+isblank_l ctype.h CX isblank, isblank_l - test for a blank character int isblank_l(int c, locale_t locale);
+iscntrl ctype.h iscntrl, iscntrl_l - test for a control character int iscntrl(int c);
+iscntrl_l ctype.h CX iscntrl, iscntrl_l - test for a control character int iscntrl_l(int c, locale_t locale);
+isdigit ctype.h isdigit, isdigit_l - test for a decimal digit int isdigit(int c);
+isdigit_l ctype.h CX isdigit, isdigit_l - test for a decimal digit int isdigit_l(int c, locale_t locale);
+isfinite math.h isfinite - test for finite value int isfinite(real-floating x);
+isgraph ctype.h isgraph, isgraph_l - test for a visible character int isgraph(int c);
+isgraph_l ctype.h CX isgraph, isgraph_l - test for a visible character int isgraph_l(int c, locale_t locale);
+isgreater math.h isgreater - test if x greater than y int isgreater(real-floating x, real-floating y);
+isgreaterequal math.h isgreaterequal - test if x is greater than or equal to y int isgreaterequal(real-floating x, real-floating y);
+isinf math.h isinf - test for infinity int isinf(real-floating x);
+isless math.h isless - test if x is less than y int isless(real-floating x, real-floating y);
+islessequal math.h islessequal - test if x is less than or equal to y int islessequal(real-floating x, real-floating y);
+islessgreater math.h islessgreater - test if x is less than or greater than y int islessgreater(real-floating x, real-floating y);
+islower ctype.h islower, islower_l - test for a lowercase letter int islower(int c);
+islower_l ctype.h CX islower, islower_l - test for a lowercase letter int islower_l(int c, locale_t locale);
+isnan math.h isnan - test for a NaN int isnan(real-floating x);
+isnormal math.h isnormal - test for a normal value int isnormal(real-floating x);
+isprint ctype.h isprint, isprint_l - test for a printable character int isprint(int c);
+isprint_l ctype.h CX isprint, isprint_l - test for a printable character int isprint_l(int c, locale_t locale);
+ispunct ctype.h ispunct, ispunct_l - test for a punctuation character int ispunct(int c);
+ispunct_l ctype.h CX ispunct, ispunct_l - test for a punctuation character int ispunct_l(int c, locale_t locale);
+isspace ctype.h isspace, isspace_l - test for a white-space character int isspace(int c);
+isspace_l ctype.h CX isspace, isspace_l - test for a white-space character int isspace_l(int c, locale_t locale);
+isunordered math.h isunordered - test if arguments are unordered int isunordered(real-floating x, real-floating y);
+isupper ctype.h isupper, isupper_l - test for an uppercase letter int isupper(int c);
+isupper_l ctype.h CX isupper, isupper_l - test for an uppercase letter int isupper_l(int c, locale_t locale);
+iswalnum wctype.h iswalnum, iswalnum_l - test for an alphanumeric wide-character code int iswalnum(wint_t wc);
+iswalnum_l wctype.h CX iswalnum, iswalnum_l - test for an alphanumeric wide-character code int iswalnum_l(wint_t wc, locale_t locale);
+iswalpha wctype.h iswalpha, iswalpha_l - test for an alphabetic wide-character code int iswalpha(wint_t wc);
+iswalpha_l wctype.h CX iswalpha, iswalpha_l - test for an alphabetic wide-character code int iswalpha_l(wint_t wc, locale_t locale);
+iswblank wctype.h iswblank, iswblank_l - test for a blank wide-character code int iswblank(wint_t wc);
+iswblank_l wctype.h CX iswblank, iswblank_l - test for a blank wide-character code int iswblank_l(wint_t wc, locale_t locale);
+iswcntrl wctype.h iswcntrl, iswcntrl_l - test for a control wide-character code int iswcntrl(wint_t wc);
+iswcntrl_l wctype.h CX iswcntrl, iswcntrl_l - test for a control wide-character code int iswcntrl_l(wint_t wc, locale_t locale);
+iswctype wctype.h iswctype, iswctype_l - test character for a specified class int iswctype(wint_t wc, wctype_t charclass);
+iswctype_l wctype.h CX iswctype, iswctype_l - test character for a specified class int iswctype_l(wint_t wc, wctype_t charclass, locale_t locale);
+iswdigit wctype.h iswdigit, iswdigit_l - test for a decimal digit wide-character code int iswdigit(wint_t wc);
+iswdigit_l wctype.h CX iswdigit, iswdigit_l - test for a decimal digit wide-character code int iswdigit_l(wint_t wc, locale_t locale);
+iswgraph wctype.h iswgraph, iswgraph_l - test for a visible wide-character code int iswgraph(wint_t wc);
+iswgraph_l wctype.h CX iswgraph, iswgraph_l - test for a visible wide-character code int iswgraph_l(wint_t wc, locale_t locale);
+iswlower wctype.h iswlower, iswlower_l - test for a lowercase letter wide-character code int iswlower(wint_t wc);
+iswlower_l wctype.h CX iswlower, iswlower_l - test for a lowercase letter wide-character code int iswlower_l(wint_t wc, locale_t locale);
+iswprint wctype.h iswprint, iswprint_l - test for a printable wide-character code int iswprint(wint_t wc);
+iswprint_l wctype.h CX iswprint, iswprint_l - test for a printable wide-character code int iswprint_l(wint_t wc, locale_t locale);
+iswpunct wctype.h iswpunct, iswpunct_l - test for a punctuation wide-character code int iswpunct(wint_t wc);
+iswpunct_l wctype.h CX iswpunct, iswpunct_l - test for a punctuation wide-character code int iswpunct_l(wint_t wc, locale_t locale);
+iswspace wctype.h iswspace, iswspace_l - test for a white-space wide-character code int iswspace(wint_t wc);
+iswspace_l wctype.h CX iswspace, iswspace_l - test for a white-space wide-character code int iswspace_l(wint_t wc, locale_t locale);
+iswupper wctype.h iswupper, iswupper_l - test for an uppercase letter wide-character code int iswupper(wint_t wc);
+iswupper_l wctype.h CX iswupper, iswupper_l - test for an uppercase letter wide-character code int iswupper_l(wint_t wc, locale_t locale);
+iswxdigit wctype.h iswxdigit, iswxdigit_l - test for a hexadecimal digit wide-character code int iswxdigit(wint_t wc);
+iswxdigit_l wctype.h CX iswxdigit, iswxdigit_l - test for a hexadecimal digit wide-character code int iswxdigit_l(wint_t wc, locale_t locale);
+isxdigit ctype.h isxdigit, isxdigit_l - test for a hexadecimal digit int isxdigit(int c);
+isxdigit_l ctype.h CX isxdigit, isxdigit_l - test for a hexadecimal digit int isxdigit_l(int c, locale_t locale);
+j0 math.h XSI j0, j1, jn - Bessel functions of the first kind double j0(double x);
+j1 math.h XSI j0, j1, jn - Bessel functions of the first kind double j1(double x);
+jn math.h XSI j0, j1, jn - Bessel functions of the first kind double jn(int n, double x);
+jrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers long jrand48(unsigned short xsubi[3]);
+kill signal.h CX kill - send a signal to a process or a group of processes int kill(pid_t pid, int sig);
+killpg signal.h XSI killpg - send a signal to a process group int killpg(pid_t pgrp, int sig);
+l64a stdlib.h XSI a64l, l64a - convert between a 32-bit integer and a radix-64 ASCII string char *l64a(long value);
+labs stdlib.h labs, llabs - return a long integer absolute value long labs(long i);
+lchown unistd.h lchown - change the owner and group of a symbolic link int lchown(const char *path, uid_t owner, gid_t group);
+lcong48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers void lcong48(unsigned short param[7]);
+ldexp math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number double ldexp(double x, int exp);
+ldexpf math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number float ldexpf(float x, int exp);
+ldexpl math.h ldexp, ldexpf, ldexpl - load exponent of a floating-point number long double ldexpl(long double x, int exp);
+ldiv stdlib.h ldiv, lldiv - compute quotient and remainder of a long division ldiv_t ldiv(long numer, long denom);
+lfind search.h XSI lsearch, lfind - linear search and update void *lfind(const void *key, const void *base, size_t *nelp, size_t width, int (*compar)(const void *, const void *));
+lgamma math.h lgamma, lgammaf, lgammal, signgam - log gamma function double lgamma(double x);
+lgammaf math.h lgamma, lgammaf, lgammal, signgam - log gamma function float lgammaf(float x);
+lgammal math.h lgamma, lgammaf, lgammal, signgam - log gamma function long double lgammal(long double x);
+link unistd.h link, linkat - link one file to another file relative to two directory file descriptors int link(const char *path1, const char *path2);
+linkat unistd.h link, linkat - link one file to another file relative to two directory file descriptors int linkat(int fd1, const char *path1, int fd2, const char *path2, int flag);
+lio_listio aio.h lio_listio - list directed I/O int lio_listio(int mode, struct aiocb *restrict const list[restrict], int nent, struct sigevent *restrict sig);
+listen sys/socket.h listen - listen for socket connections and limit the queue of incoming connections int listen(int socket, int backlog);
+llabs stdlib.h labs, llabs - return a long integer absolute value long long llabs(long long i);
+lldiv stdlib.h ldiv, lldiv - compute quotient and remainder of a long division lldiv_t lldiv(long long numer, long long denom);
+llrint math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction long long llrint(double x);
+llrintf math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction long long llrintf(float x);
+llrintl math.h llrint, llrintf, llrintl - round to the nearest integer value using current rounding direction long long llrintl(long double x);
+llround math.h llround, llroundf, llroundl - round to nearest integer value long long llround(double x);
+llroundf math.h llround, llroundf, llroundl - round to nearest integer value long long llroundf(float x);
+llroundl math.h llround, llroundf, llroundl - round to nearest integer value long long llroundl(long double x);
+localeconv locale.h localeconv - return locale-specific information struct lconv *localeconv(void);
+localtime time.h localtime, localtime_r - convert a time value to a broken-down local time struct tm *localtime(const time_t *timer);
+localtime_r time.h CX localtime, localtime_r - convert a time value to a broken-down local time struct tm *localtime_r(const time_t *restrict timer, struct tm *restrict result);
+lockf unistd.h XSI lockf - record locking on files int lockf(int fildes, int function, off_t size);
+log math.h log, logf, logl - natural logarithm function double log(double x);
+log10 math.h log10, log10f, log10l - base 10 logarithm function double log10(double x);
+log10f math.h log10, log10f, log10l - base 10 logarithm function float log10f(float x);
+log10l math.h log10, log10f, log10l - base 10 logarithm function long double log10l(long double x);
+log1p math.h log1p, log1pf, log1pl - compute a natural logarithm double log1p(double x);
+log1pf math.h log1p, log1pf, log1pl - compute a natural logarithm float log1pf(float x);
+log1pl math.h log1p, log1pf, log1pl - compute a natural logarithm long double log1pl(long double x);
+log2 math.h log2, log2f, log2l - compute base 2 logarithm functions double log2(double x);
+log2f math.h log2, log2f, log2l - compute base 2 logarithm functions float log2f(float x);
+log2l math.h log2, log2f, log2l - compute base 2 logarithm functions long double log2l(long double x);
+logb math.h logb, logbf, logbl - radix-independent exponent double logb(double x);
+logbf math.h logb, logbf, logbl - radix-independent exponent float logbf(float x);
+logbl math.h logb, logbf, logbl - radix-independent exponent long double logbl(long double x);
+logf math.h log, logf, logl - natural logarithm function float logf(float x);
+logl math.h log, logf, logl - natural logarithm function long double logl(long double x);
+longjmp setjmp.h longjmp - non-local goto void longjmp(jmp_buf env, int val);
+lrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers long lrand48(void);
+lrint math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction long lrint(double x);
+lrintf math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction long lrintf(float x);
+lrintl math.h lrint, lrintf, lrintl - round to nearest integer value using current rounding direction long lrintl(long double x);
+lround math.h lround, lroundf, lroundl - round to nearest integer value long lround(double x);
+lroundf math.h lround, lroundf, lroundl - round to nearest integer value long lroundf(float x);
+lroundl math.h lround, lroundf, lroundl - round to nearest integer value long lroundl(long double x);
+lsearch search.h XSI lsearch, lfind - linear search and update void *lsearch(const void *key, void *base, size_t *nelp, size_t width, int (*compar)(const void *, const void *));
+lseek unistd.h lseek - move the read/write file offset off_t lseek(int fildes, off_t offset, int whence);
+lstat sys/stat.h fstatat, lstat, stat - get file status int lstat(const char *restrict path, struct stat *restrict buf);
+malloc stdlib.h malloc - a memory allocator void *malloc(size_t size);
+mblen stdlib.h mblen - get number of bytes in a character int mblen(const char *s, size_t n);
+mbrlen wchar.h mbrlen - get number of bytes in a character (restartable) size_t mbrlen(const char *restrict s, size_t n, mbstate_t *restrict ps);
+mbrtowc wchar.h mbrtowc - convert a character to a wide-character code (restartable) size_t mbrtowc(wchar_t *restrict pwc, const char *restrict s, size_t n, mbstate_t *restrict ps);
+mbsinit wchar.h mbsinit - determine conversion object status int mbsinit(const mbstate_t *ps);
+mbsnrtowcs wchar.h CX mbsnrtowcs, mbsrtowcs - convert a character string to a wide-character string (restartable) size_t mbsnrtowcs(wchar_t *restrict dst, const char **restrict src, size_t nmc, size_t len, mbstate_t *restrict ps);
+mbsrtowcs wchar.h mbsnrtowcs, mbsrtowcs - convert a character string to a wide-character string (restartable) size_t mbsrtowcs(wchar_t *restrict dst, const char **restrict src, size_t len, mbstate_t *restrict ps);
+mbstowcs stdlib.h mbstowcs - convert a character string to a wide-character string size_t mbstowcs(wchar_t *restrict pwcs, const char *restrict s, size_t n);
+mbtowc stdlib.h mbtowc - convert a character to a wide-character code int mbtowc(wchar_t *restrict pwc, const char *restrict s, size_t n);
+memccpy string.h XSI memccpy - copy bytes in memory void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n);
+memchr string.h memchr - find byte in memory void *memchr(const void *s, int c, size_t n);
+memcmp string.h memcmp - compare bytes in memory int memcmp(const void *s1, const void *s2, size_t n);
+memcpy string.h memcpy - copy bytes in memory void *memcpy(void *restrict s1, const void *restrict s2, size_t n);
+memmove string.h memmove - copy bytes in memory with overlapping areas void *memmove(void *s1, const void *s2, size_t n);
+memset string.h memset - set bytes in memory void *memset(void *s, int c, size_t n);
+mkdir sys/stat.h mkdir, mkdirat - make a directory relative to directory file descriptor int mkdir(const char *path, mode_t mode);
+mkdirat sys/stat.h mkdir, mkdirat - make a directory relative to directory file descriptor int mkdirat(int fd, const char *path, mode_t mode);
+mkdtemp stdlib.h CX mkdtemp, mkstemp - create a unique directory or file char *mkdtemp(char *template);
+mkfifo sys/stat.h mkfifo, mkfifoat - make a FIFO special file relative to directory file descriptor int mkfifo(const char *path, mode_t mode);
+mkfifoat sys/stat.h mkfifo, mkfifoat - make a FIFO special file relative to directory file descriptor int mkfifoat(int fd, const char *path, mode_t mode);
+mknod sys/stat.h XSI mknod, mknodat - make directory, special file, or regular file int mknod(const char *path, mode_t mode, dev_t dev);
+mknodat sys/stat.h XSI mknod, mknodat - make directory, special file, or regular file int mknodat(int fd, const char *path, mode_t mode, dev_t dev);
+mkstemp stdlib.h CX mkdtemp, mkstemp - create a unique directory or file int mkstemp(char *template);
+mktime time.h mktime - convert broken-down time into time since the Epoch time_t mktime(struct tm *timeptr);
+mlock sys/mman.h MLR mlock, munlock - lock or unlock a range of process address space (<b>REALTIME</b>) int mlock(const void *addr, size_t len);
+mlockall sys/mman.h ML mlockall, munlockall - lock/unlock the address space of a process (<b>REALTIME</b>) int mlockall(int flags);
+mmap sys/mman.h mmap - map pages of memory void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
+modf math.h modf, modff, modfl - decompose a floating-point number double modf(double x, double *iptr);
+modff math.h modf, modff, modfl - decompose a floating-point number float modff(float value, float *iptr);
+modfl math.h modf, modff, modfl - decompose a floating-point number long double modfl(long double value, long double *iptr);
+mprotect sys/mman.h mprotect - set protection of memory mapping int mprotect(void *addr, size_t len, int prot);
+mq_close mqueue.h MSG mq_close - close a message queue (<b>REALTIME</b>) int mq_close(mqd_t mqdes);
+mq_getattr mqueue.h MSG mq_getattr - get message queue attributes (<b>REALTIME</b>) int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat);
+mq_notify mqueue.h MSG mq_notify - notify process that a message is available (<b>REALTIME</b>) int mq_notify(mqd_t mqdes, const struct sigevent *notification);
+mq_open mqueue.h MSG mq_open - open a message queue (<b>REALTIME</b>) mqd_t mq_open(const char *name, int oflag, ...);
+mq_receive mqueue.h mqueue.h time.h MSG mq_receive, mq_timedreceive - receive a message from a message queue (<b>REALTIME</b>) ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio);
+mq_send mqueue.h mqueue.h time.h MSG mq_send, mq_timedsend - send a message to a message queue (<b>REALTIME</b>) int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio);
+mq_setattr mqueue.h MSG mq_setattr - set message queue attributes (<b>REALTIME</b>) int mq_setattr(mqd_t mqdes, const struct mq_attr *restrict mqstat, struct mq_attr *restrict omqstat);
+mq_timedreceive mqueue.h mqueue.h time.h MSG mq_receive, mq_timedreceive - receive a message from a message queue (<b>REALTIME</b>) ssize_t mq_timedreceive(mqd_t mqdes, char *restrict msg_ptr, size_t msg_len, unsigned *restrict msg_prio, const struct timespec *restrict abstime);
+mq_timedsend mqueue.h mqueue.h time.h MSG mq_send, mq_timedsend - send a message to a message queue (<b>REALTIME</b>) int mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio, const struct timespec *abstime);
+mq_unlink mqueue.h MSG mq_unlink - remove a message queue (<b>REALTIME</b>) int mq_unlink(const char *name);
+mrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers long mrand48(void);
+msgctl sys/msg.h XSI msgctl - XSI message control operations int msgctl(int msqid, int cmd, struct msqid_ds *buf);
+msgget sys/msg.h XSI msgget - get the XSI message queue identifier int msgget(key_t key, int msgflg);
+msgrcv sys/msg.h XSI msgrcv - XSI message receive operation ssize_t msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg);
+msgsnd sys/msg.h XSI msgsnd - XSI message send operation int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg);
+msync sys/mman.h XSI msync - synchronize memory with physical storage int msync(void *addr, size_t len, int flags);
+munlock sys/mman.h MLR mlock, munlock - lock or unlock a range of process address space (<b>REALTIME</b>) int munlock(const void *addr, size_t len);
+munlockall sys/mman.h ML mlockall, munlockall - lock/unlock the address space of a process (<b>REALTIME</b>) int munlockall(void);
+munmap sys/mman.h munmap - unmap pages of memory int munmap(void *addr, size_t len);
+nan math.h nan, nanf, nanl - return quiet NaN double nan(const char *tagp);
+nanf math.h nan, nanf, nanl - return quiet NaN float nanf(const char *tagp);
+nanl math.h nan, nanf, nanl - return quiet NaN long double nanl(const char *tagp);
+nanosleep time.h CX nanosleep - high resolution sleep int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
+nearbyint math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions double nearbyint(double x);
+nearbyintf math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions float nearbyintf(float x);
+nearbyintl math.h nearbyint, nearbyintf, nearbyintl - floating-point rounding functions long double nearbyintl(long double x);
+newlocale locale.h CX newlocale - create or modify a locale object locale_t newlocale(int category_mask, const char *locale, locale_t base);
+nextafter math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number double nextafter(double x, double y);
+nextafterf math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number float nextafterf(float x, float y);
+nextafterl math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number long double nextafterl(long double x, long double y);
+nexttoward math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number double nexttoward(double x, long double y);
+nexttowardf math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number float nexttowardf(float x, long double y);
+nexttowardl math.h nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - next representable floating-point number long double nexttowardl(long double x, long double y);
+nftw ftw.h XSI nftw - walk a file tree int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags);
+nice unistd.h XSI nice - change the nice value of a process int nice(int incr);
+nl_langinfo langinfo.h nl_langinfo, nl_langinfo_l - language information char *nl_langinfo(nl_item item);
+nl_langinfo_l langinfo.h nl_langinfo, nl_langinfo_l - language information char *nl_langinfo_l(nl_item item, locale_t locale);
+nrand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers long nrand48(unsigned short xsubi[3]);
+ntohl arpa/inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order uint32_t ntohl(uint32_t netlong);
+ntohs arpa/inet.h htonl, htons, ntohl, ntohs - convert values between host and network byte order uint16_t ntohs(uint16_t netshort);
+open sys/stat.h fcntl.h OH open, openat - open file relative to directory file descriptor int open(const char *path, int oflag, ...);
+open_memstream stdio.h wchar.h CX open_memstream, open_wmemstream - open a dynamic memory buffer stream FILE *open_memstream(char **bufp, size_t *sizep);
+open_wmemstream stdio.h wchar.h CX open_memstream, open_wmemstream - open a dynamic memory buffer stream FILE *open_wmemstream(wchar_t **bufp, size_t *sizep);
+openat sys/stat.h fcntl.h OH open, openat - open file relative to directory file descriptor int openat(int fd, const char *path, int oflag, ...);
+opendir dirent.h fdopendir, opendir - open directory associated with file descriptor DIR *opendir(const char *dirname);
+openlog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log void openlog(const char *ident, int logopt, int facility);
+optarg unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
+opterr unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
+optind unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
+optopt unistd.h getopt, optarg, opterr, optind, optopt - command option parsing
+pathconf unistd.h fpathconf, pathconf - get configurable pathname variables long pathconf(const char *path, int name);
+pause unistd.h pause - suspend the thread until a signal is received int pause(void);
+pclose stdio.h CX pclose - close a pipe stream to or from a process int pclose(FILE *stream);
+perror stdio.h perror - write error messages to standard error void perror(const char *s);
+pipe unistd.h pipe - create an interprocess channel int pipe(int fildes[2]);
+poll poll.h poll - input/output multiplexing int poll(struct pollfd fds[], nfds_t nfds, int timeout);
+popen stdio.h CX popen - initiate pipe streams to or from a process FILE *popen(const char *command, const char *mode);
+posix_fadvise fcntl.h ADV posix_fadvise - file advisory information (<b>ADVANCED REALTIME</b>) int posix_fadvise(int fd, off_t offset, off_t len, int advice);
+posix_fallocate fcntl.h ADV posix_fallocate - file space control (<b>ADVANCED REALTIME</b>) int posix_fallocate(int fd, off_t offset, off_t len);
+posix_madvise sys/mman.h ADV posix_madvise - memory advisory information and alignment control (<b>ADVANCED REALTIME</b>) int posix_madvise(void *addr, size_t len, int advice);
+posix_mem_offset sys/mman.h TYM posix_mem_offset - find offset and length of a mapped typed memory block (<b>ADVANCED REALTIME</b>) int posix_mem_offset(const void *restrict addr, size_t len, off_t *restrict off, size_t *restrict contig_len, int *restrict fildes);
+posix_memalign stdlib.h ADV posix_memalign - aligned memory allocation (<b>ADVANCED REALTIME</b>) int posix_memalign(void **memptr, size_t alignment, size_t size);
+posix_openpt stdlib.h fcntl.h XSI posix_openpt - open a pseudo-terminal device int posix_openpt(int oflag);
+posix_spawn spawn.h SPN posix_spawn, posix_spawnp - spawn a process (<b>ADVANCED REALTIME</b>) int posix_spawn(pid_t *restrict pid, const char *restrict path, const posix_spawn_file_actions_t *file_actions, const posix_spawnattr_t *restrict attrp, char *const argv[restrict], char *const envp[restrict]);
+posix_spawn_file_actions_addclose spawn.h SPN posix_spawn_file_actions_addclose, posix_spawn_file_actions_addopen - add close or open action to spawn file actions object (<b>ADVANCED REALTIME</b>) int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *file_actions, int fildes);
+posix_spawn_file_actions_adddup2 spawn.h SPN posix_spawn_file_actions_adddup2 - add dup2 action to spawn file actions object (<b>ADVANCED REALTIME</b>) int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *file_actions, int fildes, int newfildes);
+posix_spawn_file_actions_addopen spawn.h SPN posix_spawn_file_actions_addclose, posix_spawn_file_actions_addopen - add close or open action to spawn file actions object (<b>ADVANCED REALTIME</b>) int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *restrict file_actions, int fildes, const char *restrict path, int oflag, mode_t mode);
+posix_spawn_file_actions_destroy spawn.h SPN posix_spawn_file_actions_destroy, posix_spawn_file_actions_init - destroy and initialize spawn file actions object (<b>ADVANCED REALTIME</b>) int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *file_actions);
+posix_spawn_file_actions_init spawn.h SPN posix_spawn_file_actions_destroy, posix_spawn_file_actions_init - destroy and initialize spawn file actions object (<b>ADVANCED REALTIME</b>) int posix_spawn_file_actions_init(posix_spawn_file_actions_t *file_actions);
+posix_spawnattr_destroy spawn.h SPN posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_destroy(posix_spawnattr_t *attr);
+posix_spawnattr_getflags spawn.h SPN posix_spawnattr_getflags, posix_spawnattr_setflags - get and set the spawn-flags attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getflags(const posix_spawnattr_t *restrict attr, short *restrict flags);
+posix_spawnattr_getpgroup spawn.h SPN posix_spawnattr_getpgroup, posix_spawnattr_setpgroup - get and set the spawn-pgroup attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict attr, pid_t *restrict pgroup);
+posix_spawnattr_getschedparam spawn.h sched.h SPN PS posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get and set the spawn-schedparam attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getschedparam(const posix_spawnattr_t *restrict attr, struct sched_param *restrict schedparam);
+posix_spawnattr_getschedpolicy spawn.h sched.h SPN PS posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getschedpolicy(const posix_spawnattr_t *restrict attr, int *restrict schedpolicy);
+posix_spawnattr_getsigdefault signal.h spawn.h SPN posix_spawnattr_getsigdefault, posix_spawnattr_setsigdefault - get and set the spawn-sigdefault attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getsigdefault(const posix_spawnattr_t *restrict attr, sigset_t *restrict sigdefault);
+posix_spawnattr_getsigmask signal.h spawn.h SPN posix_spawnattr_getsigmask, posix_spawnattr_setsigmask - get and set the spawn-sigmask attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_getsigmask(const posix_spawnattr_t *restrict attr, sigset_t *restrict sigmask);
+posix_spawnattr_init spawn.h SPN posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_init(posix_spawnattr_t *attr);
+posix_spawnattr_setflags spawn.h SPN posix_spawnattr_getflags, posix_spawnattr_setflags - get and set the spawn-flags attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags);
+posix_spawnattr_setpgroup spawn.h SPN posix_spawnattr_getpgroup, posix_spawnattr_setpgroup - get and set the spawn-pgroup attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setpgroup(posix_spawnattr_t *attr, pid_t pgroup);
+posix_spawnattr_setschedparam spawn.h sched.h SPN PS posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get and set the spawn-schedparam attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict attr, const struct sched_param *restrict schedparam);
+posix_spawnattr_setschedpolicy spawn.h sched.h SPN PS posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setschedpolicy(posix_spawnattr_t *attr, int schedpolicy);
+posix_spawnattr_setsigdefault signal.h spawn.h SPN posix_spawnattr_getsigdefault, posix_spawnattr_setsigdefault - get and set the spawn-sigdefault attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setsigdefault(posix_spawnattr_t *restrict attr, const sigset_t *restrict sigdefault);
+posix_spawnattr_setsigmask signal.h spawn.h SPN posix_spawnattr_getsigmask, posix_spawnattr_setsigmask - get and set the spawn-sigmask attribute of a spawn attributes object (<b>ADVANCED REALTIME</b>) int posix_spawnattr_setsigmask(posix_spawnattr_t *restrict attr, const sigset_t *restrict sigmask);
+posix_spawnp spawn.h SPN posix_spawn, posix_spawnp - spawn a process (<b>ADVANCED REALTIME</b>) int posix_spawnp(pid_t *restrict pid, const char *restrict file, const posix_spawn_file_actions_t *file_actions, const posix_spawnattr_t *restrict attrp, char *const argv[restrict], char *const envp[restrict]);
+posix_typed_mem_get_info sys/mman.h TYM posix_typed_mem_get_info - query typed memory information (<b>ADVANCED REALTIME</b>) int posix_typed_mem_get_info(int fildes, struct posix_typed_mem_info *info);
+posix_typed_mem_open sys/mman.h TYM posix_typed_mem_open - open a typed memory object (<b>ADVANCED REALTIME</b>) int posix_typed_mem_open(const char *name, int oflag, int tflag);
+pow math.h pow, powf, powl - power function double pow(double x, double y);
+powf math.h pow, powf, powl - power function float powf(float x, float y);
+powl math.h pow, powf, powl - power function long double powl(long double x, long double y);
+pread unistd.h pread, read - read from a file ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset);
+printf stdio.h dprintf, fprintf, printf, snprintf, sprintf - print formatted output int printf(const char *restrict format, ...);
+pselect sys/select.h pselect, select - synchronous I/O multiplexing int pselect(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict errorfds, const struct timespec *restrict timeout, const sigset_t *restrict sigmask);
+psiginfo signal.h CX psiginfo, psignal - print signal information to standard error void psiginfo(const siginfo_t *pinfo, const char *message);
+psignal signal.h CX psiginfo, psignal - print signal information to standard error void psignal(int signum, const char *message);
+pthread_atfork pthread.h pthread_atfork - register fork handlers int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
+pthread_attr_destroy pthread.h pthread_attr_destroy, pthread_attr_init - destroy and initialize the thread attributes object int pthread_attr_destroy(pthread_attr_t *attr);
+pthread_attr_getdetachstate pthread.h pthread_attr_getdetachstate, pthread_attr_setdetachstate - get and set the detachstate attribute int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate);
+pthread_attr_getguardsize pthread.h pthread_attr_getguardsize, pthread_attr_setguardsize - get and set the thread guardsize attribute int pthread_attr_getguardsize(const pthread_attr_t *restrict attr, size_t *restrict guardsize);
+pthread_attr_getinheritsched pthread.h TPS pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the inheritsched attribute (<b>REALTIME THREADS</b>) int pthread_attr_getinheritsched(const pthread_attr_t *restrict attr, int *restrict inheritsched);
+pthread_attr_getschedparam pthread.h pthread_attr_getschedparam, pthread_attr_setschedparam - get and set the schedparam attribute int pthread_attr_getschedparam(const pthread_attr_t *restrict attr, struct sched_param *restrict param);
+pthread_attr_getschedpolicy pthread.h TPS pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get and set the schedpolicy attribute (<b>REALTIME THREADS</b>) int pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr, int *restrict policy);
+pthread_attr_getscope pthread.h TPS pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (<b>REALTIME THREADS</b>) int pthread_attr_getscope(const pthread_attr_t *restrict attr, int *restrict contentionscope);
+pthread_attr_getstack pthread.h TSA TSS pthread_attr_getstack, pthread_attr_setstack - get and set stack attributes int pthread_attr_getstack(const pthread_attr_t *restrict attr, void **restrict stackaddr, size_t *restrict stacksize);
+pthread_attr_getstacksize pthread.h TSS pthread_attr_getstacksize, pthread_attr_setstacksize - get and set the stacksize attribute int pthread_attr_getstacksize(const pthread_attr_t *restrict attr, size_t *restrict stacksize);
+pthread_attr_init pthread.h pthread_attr_destroy, pthread_attr_init - destroy and initialize the thread attributes object int pthread_attr_init(pthread_attr_t *attr);
+pthread_attr_setdetachstate pthread.h pthread_attr_getdetachstate, pthread_attr_setdetachstate - get and set the detachstate attribute int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);
+pthread_attr_setguardsize pthread.h pthread_attr_getguardsize, pthread_attr_setguardsize - get and set the thread guardsize attribute int pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize);
+pthread_attr_setinheritsched pthread.h TPS pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the inheritsched attribute (<b>REALTIME THREADS</b>) int pthread_attr_setinheritsched(pthread_attr_t *attr, int inheritsched);
+pthread_attr_setschedparam pthread.h pthread_attr_getschedparam, pthread_attr_setschedparam - get and set the schedparam attribute int pthread_attr_setschedparam(pthread_attr_t *restrict attr, const struct sched_param *restrict param);
+pthread_attr_setschedpolicy pthread.h TPS pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get and set the schedpolicy attribute (<b>REALTIME THREADS</b>) int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
+pthread_attr_setscope pthread.h TPS pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (<b>REALTIME THREADS</b>) int pthread_attr_setscope(pthread_attr_t *attr, int contentionscope);
+pthread_attr_setstack pthread.h TSA TSS pthread_attr_getstack, pthread_attr_setstack - get and set stack attributes int pthread_attr_setstack(pthread_attr_t *attr, void *stackaddr, size_t stacksize);
+pthread_attr_setstacksize pthread.h TSS pthread_attr_getstacksize, pthread_attr_setstacksize - get and set the stacksize attribute int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
+pthread_barrier_destroy pthread.h pthread_barrier_destroy, pthread_barrier_init - destroy and initialize a barrier object int pthread_barrier_destroy(pthread_barrier_t *barrier);
+pthread_barrier_init pthread.h pthread_barrier_destroy, pthread_barrier_init - destroy and initialize a barrier object int pthread_barrier_init(pthread_barrier_t *restrict barrier, const pthread_barrierattr_t *restrict attr, unsigned count);
+pthread_barrier_wait pthread.h pthread_barrier_wait - synchronize at a barrier int pthread_barrier_wait(pthread_barrier_t *barrier);
+pthread_barrierattr_destroy pthread.h pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize the barrier attributes object int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);
+pthread_barrierattr_getpshared pthread.h TSH pthread_barrierattr_getpshared, pthread_barrierattr_setpshared - get and set the process-shared attribute of the barrier attributes object int pthread_barrierattr_getpshared(const pthread_barrierattr_t *restrict attr, int *restrict pshared);
+pthread_barrierattr_init pthread.h pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize the barrier attributes object int pthread_barrierattr_init(pthread_barrierattr_t *attr);
+pthread_barrierattr_setpshared pthread.h TSH pthread_barrierattr_getpshared, pthread_barrierattr_setpshared - get and set the process-shared attribute of the barrier attributes object int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared);
+pthread_cancel pthread.h pthread_cancel - cancel execution of a thread int pthread_cancel(pthread_t thread);
+pthread_cleanup_pop pthread.h pthread_cleanup_pop, pthread_cleanup_push - establish cancellation handlers void pthread_cleanup_pop(int execute);
+pthread_cleanup_push pthread.h pthread_cleanup_pop, pthread_cleanup_push - establish cancellation handlers void pthread_cleanup_push(void (*routine)(void*), void *arg);
+pthread_cond_broadcast pthread.h pthread_cond_broadcast, pthread_cond_signal - broadcast or signal a condition int pthread_cond_broadcast(pthread_cond_t *cond);
+pthread_cond_destroy pthread.h pthread_cond_destroy, pthread_cond_init - destroy and initialize condition variables int pthread_cond_destroy(pthread_cond_t *cond);
+pthread_cond_init pthread.h pthread_cond_destroy, pthread_cond_init - destroy and initialize condition variables int pthread_cond_init(pthread_cond_t *restrict cond, const pthread_condattr_t *restrict attr);
+pthread_cond_signal pthread.h pthread_cond_broadcast, pthread_cond_signal - broadcast or signal a condition int pthread_cond_signal(pthread_cond_t *cond);
+pthread_cond_timedwait pthread.h pthread_cond_timedwait, pthread_cond_wait - wait on a condition int pthread_cond_timedwait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex, const struct timespec *restrict abstime);
+pthread_cond_wait pthread.h pthread_cond_timedwait, pthread_cond_wait - wait on a condition int pthread_cond_wait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex);
+pthread_condattr_destroy pthread.h pthread_condattr_destroy, pthread_condattr_init - destroy and initialize the condition variable attributes object int pthread_condattr_destroy(pthread_condattr_t *attr);
+pthread_condattr_getclock pthread.h pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock selection condition variable attribute int pthread_condattr_getclock(const pthread_condattr_t *restrict attr, clockid_t *restrict clock_id);
+pthread_condattr_getpshared pthread.h TSH pthread_condattr_getpshared, pthread_condattr_setpshared - get and set the process-shared condition variable attributes int pthread_condattr_getpshared(const pthread_condattr_t *restrict attr, int *restrict pshared);
+pthread_condattr_init pthread.h pthread_condattr_destroy, pthread_condattr_init - destroy and initialize the condition variable attributes object int pthread_condattr_init(pthread_condattr_t *attr);
+pthread_condattr_setclock pthread.h pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock selection condition variable attribute int pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock_id);
+pthread_condattr_setpshared pthread.h TSH pthread_condattr_getpshared, pthread_condattr_setpshared - get and set the process-shared condition variable attributes int pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared);
+pthread_create pthread.h pthread_create - thread creation int pthread_create(pthread_t *restrict thread, const pthread_attr_t *restrict attr, void *(*start_routine)(void*), void *restrict arg);
+pthread_detach pthread.h pthread_detach - detach a thread int pthread_detach(pthread_t thread);
+pthread_equal pthread.h pthread_equal - compare thread IDs int pthread_equal(pthread_t t1, pthread_t t2);
+pthread_exit pthread.h pthread_exit - thread termination void pthread_exit(void *value_ptr);
+pthread_getconcurrency pthread.h OB XSI pthread_getconcurrency, pthread_setconcurrency - get and set the level of concurrency int pthread_getconcurrency(void);
+pthread_getcpuclockid pthread.h time.h TCT pthread_getcpuclockid - access a thread CPU-time clock (<b>ADVANCED REALTIME THREADS</b>) int pthread_getcpuclockid(pthread_t thread_id, clockid_t *clock_id);
+pthread_getschedparam pthread.h TPS pthread_getschedparam, pthread_setschedparam - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>) int pthread_getschedparam(pthread_t thread, int *restrict policy, struct sched_param *restrict param);
+pthread_getspecific pthread.h pthread_getspecific, pthread_setspecific - thread-specific data management void *pthread_getspecific(pthread_key_t key);
+pthread_join pthread.h pthread_join - wait for thread termination int pthread_join(pthread_t thread, void **value_ptr);
+pthread_key_create pthread.h pthread_key_create - thread-specific data key creation int pthread_key_create(pthread_key_t *key, void (*destructor)(void*));
+pthread_key_delete pthread.h pthread_key_delete - thread-specific data key deletion int pthread_key_delete(pthread_key_t key);
+pthread_kill signal.h CX pthread_kill - send a signal to a thread int pthread_kill(pthread_t thread, int sig);
+pthread_mutex_consistent pthread.h pthread_mutex_consistent - mark state protected by robust mutex as consistent int pthread_mutex_consistent(pthread_mutex_t *mutex);
+pthread_mutex_destroy pthread.h pthread_mutex_destroy, pthread_mutex_init - destroy and initialize a mutex int pthread_mutex_destroy(pthread_mutex_t *mutex);
+pthread_mutex_getprioceiling pthread.h RPP pthread_mutex_getprioceiling, pthread_mutex_setprioceiling - get and set the priority ceiling of a mutex (<b>REALTIME THREADS</b>) int pthread_mutex_getprioceiling(const pthread_mutex_t *restrict mutex, int *restrict prioceiling);
+pthread_mutex_init pthread.h pthread_mutex_destroy, pthread_mutex_init - destroy and initialize a mutex int pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict attr);
+pthread_mutex_lock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex int pthread_mutex_lock(pthread_mutex_t *mutex);
+pthread_mutex_setprioceiling pthread.h RPP pthread_mutex_getprioceiling, pthread_mutex_setprioceiling - get and set the priority ceiling of a mutex (<b>REALTIME THREADS</b>) int pthread_mutex_setprioceiling(pthread_mutex_t *restrict mutex, int prioceiling, int *restrict old_ceiling);
+pthread_mutex_timedlock pthread.h time.h pthread_mutex_timedlock - lock a mutex int pthread_mutex_timedlock(pthread_mutex_t *restrict mutex, const struct timespec *restrict abstime);
+pthread_mutex_trylock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex int pthread_mutex_trylock(pthread_mutex_t *mutex);
+pthread_mutex_unlock pthread.h pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock - lock and unlock a mutex int pthread_mutex_unlock(pthread_mutex_t *mutex);
+pthread_mutexattr_destroy pthread.h pthread_mutexattr_destroy, pthread_mutexattr_init - destroy and initialize the mutex attributes object int pthread_mutexattr_destroy(pthread_mutexattr_t *attr);
+pthread_mutexattr_getprioceiling pthread.h RPP pthread_mutexattr_getprioceiling, pthread_mutexattr_setprioceiling - get and set the prioceiling attribute of the mutex attributes object (<b>REALTIME THREADS</b>) int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *restrict attr, int *restrict prioceiling);
+pthread_mutexattr_getprotocol pthread.h MC1 pthread_mutexattr_getprotocol, pthread_mutexattr_setprotocol - get and set the protocol attribute of the mutex attributes object (<b>REALTIME THREADS</b>) int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *restrict attr, int *restrict protocol);
+pthread_mutexattr_getpshared pthread.h TSH pthread_mutexattr_getpshared, pthread_mutexattr_setpshared - get and set the process-shared attribute int pthread_mutexattr_getpshared(const pthread_mutexattr_t *restrict attr, int *restrict pshared);
+pthread_mutexattr_getrobust pthread.h pthread_mutexattr_getrobust, pthread_mutexattr_setrobust - get and set the mutex robust attribute int pthread_mutexattr_getrobust(const pthread_mutexattr_t *restrict attr, int *restrict robust);
+pthread_mutexattr_gettype pthread.h pthread_mutexattr_gettype, pthread_mutexattr_settype - get and set the mutex type attribute int pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict attr, int *restrict type);
+pthread_mutexattr_init pthread.h pthread_mutexattr_destroy, pthread_mutexattr_init - destroy and initialize the mutex attributes object int pthread_mutexattr_init(pthread_mutexattr_t *attr);
+pthread_mutexattr_setprioceiling pthread.h RPP pthread_mutexattr_getprioceiling, pthread_mutexattr_setprioceiling - get and set the prioceiling attribute of the mutex attributes object (<b>REALTIME THREADS</b>) int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr, int prioceiling);
+pthread_mutexattr_setprotocol pthread.h MC1 pthread_mutexattr_getprotocol, pthread_mutexattr_setprotocol - get and set the protocol attribute of the mutex attributes object (<b>REALTIME THREADS</b>) int pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol);
+pthread_mutexattr_setpshared pthread.h TSH pthread_mutexattr_getpshared, pthread_mutexattr_setpshared - get and set the process-shared attribute int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared);
+pthread_mutexattr_setrobust pthread.h pthread_mutexattr_getrobust, pthread_mutexattr_setrobust - get and set the mutex robust attribute int pthread_mutexattr_setrobust(pthread_mutexattr_t *attr, int robust);
+pthread_mutexattr_settype pthread.h pthread_mutexattr_gettype, pthread_mutexattr_settype - get and set the mutex type attribute int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type);
+pthread_once pthread.h pthread_once - dynamic package initialization int pthread_once(pthread_once_t *once_control, void (*init_routine)(void));
+pthread_rwlock_destroy pthread.h pthread_rwlock_destroy, pthread_rwlock_init - destroy and initialize a read-write lock object int pthread_rwlock_destroy(pthread_rwlock_t *rwlock);
+pthread_rwlock_init pthread.h pthread_rwlock_destroy, pthread_rwlock_init - destroy and initialize a read-write lock object int pthread_rwlock_init(pthread_rwlock_t *restrict rwlock, const pthread_rwlockattr_t *restrict attr);
+pthread_rwlock_rdlock pthread.h pthread_rwlock_rdlock, pthread_rwlock_tryrdlock - lock a read-write lock object for reading int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock);
+pthread_rwlock_timedrdlock pthread.h time.h pthread_rwlock_timedrdlock - lock a read-write lock for reading int pthread_rwlock_timedrdlock(pthread_rwlock_t *restrict rwlock, const struct timespec *restrict abstime);
+pthread_rwlock_timedwrlock pthread.h time.h pthread_rwlock_timedwrlock - lock a read-write lock for writing int pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict rwlock, const struct timespec *restrict abstime);
+pthread_rwlock_tryrdlock pthread.h pthread_rwlock_rdlock, pthread_rwlock_tryrdlock - lock a read-write lock object for reading int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock);
+pthread_rwlock_trywrlock pthread.h pthread_rwlock_trywrlock, pthread_rwlock_wrlock - lock a read-write lock object for writing int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock);
+pthread_rwlock_unlock pthread.h pthread_rwlock_unlock - unlock a read-write lock object int pthread_rwlock_unlock(pthread_rwlock_t *rwlock);
+pthread_rwlock_wrlock pthread.h pthread_rwlock_trywrlock, pthread_rwlock_wrlock - lock a read-write lock object for writing int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);
+pthread_rwlockattr_destroy pthread.h pthread_rwlockattr_destroy, pthread_rwlockattr_init - destroy and initialize the read-write lock attributes object int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);
+pthread_rwlockattr_getpshared pthread.h TSH pthread_rwlockattr_getpshared, pthread_rwlockattr_setpshared - get and set the process-shared attribute of the read-write lock attributes object int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *restrict attr, int *restrict pshared);
+pthread_rwlockattr_init pthread.h pthread_rwlockattr_destroy, pthread_rwlockattr_init - destroy and initialize the read-write lock attributes object int pthread_rwlockattr_init(pthread_rwlockattr_t *attr);
+pthread_rwlockattr_setpshared pthread.h TSH pthread_rwlockattr_getpshared, pthread_rwlockattr_setpshared - get and set the process-shared attribute of the read-write lock attributes object int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);
+pthread_self pthread.h pthread_self - get the calling thread ID pthread_t pthread_self(void);
+pthread_setcancelstate pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state int pthread_setcancelstate(int state, int *oldstate);
+pthread_setcanceltype pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state int pthread_setcanceltype(int type, int *oldtype);
+pthread_setconcurrency pthread.h OB XSI pthread_getconcurrency, pthread_setconcurrency - get and set the level of concurrency int pthread_setconcurrency(int new_level);
+pthread_setschedparam pthread.h TPS pthread_getschedparam, pthread_setschedparam - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>) int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param);
+pthread_setschedprio pthread.h TPS pthread_setschedprio - dynamic thread scheduling parameters access (<b>REALTIME THREADS</b>) int pthread_setschedprio(pthread_t thread, int prio);
+pthread_setspecific pthread.h pthread_getspecific, pthread_setspecific - thread-specific data management int pthread_setspecific(pthread_key_t key, const void *value);
+pthread_sigmask signal.h CX pthread_sigmask, sigprocmask - examine and change blocked signals int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict oset);
+pthread_spin_destroy pthread.h pthread_spin_destroy, pthread_spin_init - destroy or initialize a spin lock object int pthread_spin_destroy(pthread_spinlock_t *lock);
+pthread_spin_init pthread.h pthread_spin_destroy, pthread_spin_init - destroy or initialize a spin lock object int pthread_spin_init(pthread_spinlock_t *lock, int pshared);
+pthread_spin_lock pthread.h pthread_spin_lock, pthread_spin_trylock - lock a spin lock object int pthread_spin_lock(pthread_spinlock_t *lock);
+pthread_spin_trylock pthread.h pthread_spin_lock, pthread_spin_trylock - lock a spin lock object int pthread_spin_trylock(pthread_spinlock_t *lock);
+pthread_spin_unlock pthread.h pthread_spin_unlock - unlock a spin lock object int pthread_spin_unlock(pthread_spinlock_t *lock);
+pthread_testcancel pthread.h pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel - set cancelability state void pthread_testcancel(void);
+ptsname stdlib.h XSI ptsname - get name of the slave pseudo-terminal device char *ptsname(int fildes);
+putc stdio.h putc - put a byte on a stream int putc(int c, FILE *stream);
+putc_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking int putc_unlocked(int c, FILE *stream);
+putchar stdio.h putchar - put a byte on a stdout stream int putchar(int c);
+putchar_unlocked stdio.h CX getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - stdio with explicit client locking int putchar_unlocked(int c);
+putenv stdlib.h XSI putenv - change or add a value to an environment int putenv(char *string);
+puts stdio.h puts - put a string on standard output int puts(const char *s);
+pututxline utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions struct utmpx *pututxline(const struct utmpx *utmpx);
+putwc stdio.h wchar.h putwc - put a wide character on a stream wint_t putwc(wchar_t wc, FILE *stream);
+putwchar wchar.h putwchar - put a wide character on a stdout stream wint_t putwchar(wchar_t wc);
+pwrite unistd.h pwrite, write - write on a file ssize_t pwrite(int fildes, const void *buf, size_t nbyte, off_t offset);
+qsort stdlib.h qsort - sort a table of data void qsort(void *base, size_t nel, size_t width, int (*compar)(const void *, const void *));
+raise signal.h raise - send a signal to the executing process int raise(int sig);
+rand stdlib.h rand, rand_r, srand - pseudo-random number generator int rand(void);
+rand_r stdlib.h OB CX rand, rand_r, srand - pseudo-random number generator int rand_r(unsigned *seed);
+random stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions long random(void);
+read unistd.h pread, read - read from a file ssize_t read(int fildes, void *buf, size_t nbyte);
+readdir dirent.h readdir, readdir_r - read a directory struct dirent *readdir(DIR *dirp);
+readdir_r dirent.h readdir, readdir_r - read a directory int readdir_r(DIR *restrict dirp, struct dirent *restrict entry, struct dirent **restrict result);
+readlink unistd.h readlink, readlinkat - read the contents of a symbolic link relative to a directory file descriptor ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize);
+readlinkat unistd.h readlink, readlinkat - read the contents of a symbolic link relative to a directory file descriptor ssize_t readlinkat(int fd, const char *restrict path, char *restrict buf, size_t bufsize);
+readv sys/uio.h XSI readv - read a vector ssize_t readv(int fildes, const struct iovec *iov, int iovcnt);
+realloc stdlib.h realloc - memory reallocator void *realloc(void *ptr, size_t size);
+realpath stdlib.h XSI realpath - resolve a pathname char *realpath(const char *restrict file_name, char *restrict resolved_name);
+recv sys/socket.h recv - receive a message from a connected socket ssize_t recv(int socket, void *buffer, size_t length, int flags);
+recvfrom sys/socket.h recvfrom - receive a message from a socket ssize_t recvfrom(int socket, void *restrict buffer, size_t length, int flags, struct sockaddr *restrict address, socklen_t *restrict address_len);
+recvmsg sys/socket.h recvmsg - receive a message from a socket ssize_t recvmsg(int socket, struct msghdr *message, int flags);
+regcomp regex.h regcomp, regerror, regexec, regfree - regular expression matching int regcomp(regex_t *restrict preg, const char *restrict pattern, int cflags);
+regerror regex.h regcomp, regerror, regexec, regfree - regular expression matching size_t regerror(int errcode, const regex_t *restrict preg, char *restrict errbuf, size_t errbuf_size);
+regexec regex.h regcomp, regerror, regexec, regfree - regular expression matching int regexec(const regex_t *restrict preg, const char *restrict string, size_t nmatch, regmatch_t pmatch[restrict], int eflags);
+regfree regex.h regcomp, regerror, regexec, regfree - regular expression matching void regfree(regex_t *preg);
+remainder math.h remainder, remainderf, remainderl - remainder function double remainder(double x, double y);
+remainderf math.h remainder, remainderf, remainderl - remainder function float remainderf(float x, float y);
+remainderl math.h remainder, remainderf, remainderl - remainder function long double remainderl(long double x, long double y);
+remove stdio.h remove - remove a file int remove(const char *path);
+remque search.h XSI insque, remque - insert or remove an element in a queue void remque(void *element);
+remquo math.h remquo, remquof, remquol - remainder functions double remquo(double x, double y, int *quo);
+remquof math.h remquo, remquof, remquol - remainder functions float remquof(float x, float y, int *quo);
+remquol math.h remquo, remquof, remquol - remainder functions long double remquol(long double x, long double y, int *quo);
+rename stdio.h CX rename, renameat - rename file relative to directory file descriptor int rename(const char *old, const char *new);
+renameat stdio.h CX rename, renameat - rename file relative to directory file descriptor int renameat(int oldfd, const char *old, int newfd, const char *new);
+rewind stdio.h rewind - reset the file position indicator in a stream void rewind(FILE *stream);
+rewinddir dirent.h rewinddir - reset the position of a directory stream to the beginning of a directory void rewinddir(DIR *dirp);
+rint math.h rint, rintf, rintl - round-to-nearest integral value double rint(double x);
+rintf math.h rint, rintf, rintl - round-to-nearest integral value float rintf(float x);
+rintl math.h rint, rintf, rintl - round-to-nearest integral value long double rintl(long double x);
+rmdir unistd.h rmdir - remove a directory int rmdir(const char *path);
+round math.h round, roundf, roundl - round to the nearest integer value in a floating-point format double round(double x);
+roundf math.h round, roundf, roundl - round to the nearest integer value in a floating-point format float roundf(float x);
+roundl math.h round, roundf, roundl - round to the nearest integer value in a floating-point format long double roundl(long double x);
+scalbln math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX double scalbln(double x, long n);
+scalblnf math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX float scalblnf(float x, long n);
+scalblnl math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX long double scalblnl(long double x, long n);
+scalbn math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX double scalbn(double x, int n);
+scalbnf math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX float scalbnf(float x, int n);
+scalbnl math.h scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX long double scalbnl(long double x, int n);
+scandir dirent.h alphasort, scandir - scan a directory int scandir(const char *dir, struct dirent ***namelist, int (*sel)(const struct dirent *), int (*compar)(const struct dirent **, const struct dirent **));
+scanf stdio.h fscanf, scanf, sscanf - convert formatted input int scanf(const char *restrict format, ...);
+sched_get_priority_max sched.h PS sched_get_priority_max, sched_get_priority_min - get priority limits (<b>REALTIME</b>) int sched_get_priority_max(int policy);
+sched_get_priority_min sched.h PS sched_get_priority_max, sched_get_priority_min - get priority limits (<b>REALTIME</b>) int sched_get_priority_min(int policy);
+sched_getparam sched.h PS sched_getparam - get scheduling parameters (<b>REALTIME</b>) int sched_getparam(pid_t pid, struct sched_param *param);
+sched_getscheduler sched.h PS sched_getscheduler - get scheduling policy (<b>REALTIME</b>) int sched_getscheduler(pid_t pid);
+sched_rr_get_interval sched.h PS sched_rr_get_interval - get execution time limits (<b>REALTIME</b>) int sched_rr_get_interval(pid_t pid, struct timespec *interval);
+sched_setparam sched.h PS sched_setparam - set scheduling parameters (<b>REALTIME</b>) int sched_setparam(pid_t pid, const struct sched_param *param);
+sched_setscheduler sched.h PS sched_setscheduler - set scheduling policy and parameters (<b>REALTIME</b>) int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param);
+sched_yield sched.h sched_yield - yield the processor int sched_yield(void);
+seed48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers unsigned short *seed48(unsigned short seed16v[3]);
+seekdir dirent.h XSI seekdir - set the position of a directory stream void seekdir(DIR *dirp, long loc);
+select sys/select.h pselect, select - synchronous I/O multiplexing int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict errorfds, struct timeval *restrict timeout);
+sem_close semaphore.h sem_close - close a named semaphore int sem_close(sem_t *sem);
+sem_destroy semaphore.h sem_destroy - destroy an unnamed semaphore int sem_destroy(sem_t *sem);
+sem_getvalue semaphore.h sem_getvalue - get the value of a semaphore int sem_getvalue(sem_t *restrict sem, int *restrict sval);
+sem_init semaphore.h sem_init - initialize an unnamed semaphore int sem_init(sem_t *sem, int pshared, unsigned value);
+sem_open semaphore.h sem_open - initialize and open a named semaphore sem_t *sem_open(const char *name, int oflag, ...);
+sem_post semaphore.h sem_post - unlock a semaphore int sem_post(sem_t *sem);
+sem_timedwait semaphore.h time.h sem_timedwait - lock a semaphore int sem_timedwait(sem_t *restrict sem, const struct timespec *restrict abstime);
+sem_trywait semaphore.h sem_trywait, sem_wait - lock a semaphore int sem_trywait(sem_t *sem);
+sem_unlink semaphore.h sem_unlink - remove a named semaphore int sem_unlink(const char *name);
+sem_wait semaphore.h sem_trywait, sem_wait - lock a semaphore int sem_wait(sem_t *sem);
+semctl sys/sem.h XSI semctl - XSI semaphore control operations int semctl(int semid, int semnum, int cmd, ...);
+semget sys/sem.h XSI semget - get set of XSI semaphores int semget(key_t key, int nsems, int semflg);
+semop sys/sem.h XSI semop - XSI semaphore operations int semop(int semid, struct sembuf *sops, size_t nsops);
+send sys/socket.h send - send a message on a socket ssize_t send(int socket, const void *buffer, size_t length, int flags);
+sendmsg sys/socket.h sendmsg - send a message on a socket using a message structure ssize_t sendmsg(int socket, const struct msghdr *message, int flags);
+sendto sys/socket.h sendto - send a message on a socket ssize_t sendto(int socket, const void *message, size_t length, int flags, const struct sockaddr *dest_addr, socklen_t dest_len);
+setbuf stdio.h setbuf - assign buffering to a stream void setbuf(FILE *restrict stream, char *restrict buf);
+setegid unistd.h setegid - set the effective group ID int setegid(gid_t gid);
+setenv stdlib.h CX setenv - add or change environment variable int setenv(const char *envname, const char *envval, int overwrite);
+seteuid unistd.h seteuid - set effective user ID int seteuid(uid_t uid);
+setgid unistd.h setgid - set-group-ID int setgid(gid_t gid);
+setgrent grp.h XSI endgrent, getgrent, setgrent - group database entry functions void setgrent(void);
+sethostent netdb.h endhostent, gethostent, sethostent - network host database functions void sethostent(int stayopen);
+setitimer sys/time.h OB XSI getitimer, setitimer - get and set value of interval timer int setitimer(int which, const struct itimerval *restrict value, struct itimerval *restrict ovalue);
+setjmp setjmp.h setjmp - set jump point for a non-local goto int setjmp(jmp_buf env);
+setkey stdlib.h XSI setkey - set encoding key (<b>CRYPT</b>) void setkey(const char *key);
+setlocale locale.h setlocale - set program locale char *setlocale(int category, const char *locale);
+setlogmask syslog.h XSI closelog, openlog, setlogmask, syslog - control system log int setlogmask(int maskpri);
+setnetent netdb.h endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions void setnetent(int stayopen);
+setpgid unistd.h setpgid - set process group ID for job control int setpgid(pid_t pid, pid_t pgid);
+setpgrp unistd.h OB XSI setpgrp - set the process group ID pid_t setpgrp(void);
+setpriority sys/resource.h XSI getpriority, setpriority - get and set the nice value int setpriority(int which, id_t who, int value);
+setprotoent netdb.h endprotoent, getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions void setprotoent(int stayopen);
+setpwent pwd.h XSI endpwent, getpwent, setpwent - user database functions void setpwent(void);
+setregid unistd.h XSI setregid - set real and effective group IDs int setregid(gid_t rgid, gid_t egid);
+setreuid unistd.h XSI setreuid - set real and effective user IDs int setreuid(uid_t ruid, uid_t euid);
+setrlimit sys/resource.h XSI getrlimit, setrlimit - control maximum resource consumption int setrlimit(int resource, const struct rlimit *rlp);
+setservent netdb.h endservent, getservbyname, getservbyport, getservent, setservent - network services database functions void setservent(int stayopen);
+setsid unistd.h setsid - create session and set process group ID pid_t setsid(void);
+setsockopt sys/socket.h setsockopt - set the socket options int setsockopt(int socket, int level, int option_name, const void *option_value, socklen_t option_len);
+setstate stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions char *setstate(char *state);
+setuid unistd.h setuid - set user ID int setuid(uid_t uid);
+setutxent utmpx.h XSI endutxent, getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions void setutxent(void);
+setvbuf stdio.h setvbuf - assign buffering to a stream int setvbuf(FILE *restrict stream, char *restrict buf, int type, size_t size);
+shm_open sys/mman.h SHM shm_open - open a shared memory object (<b>REALTIME</b>) int shm_open(const char *name, int oflag, mode_t mode);
+shm_unlink sys/mman.h SHM shm_unlink - remove a shared memory object (<b>REALTIME</b>) int shm_unlink(const char *name);
+shmat sys/shm.h XSI shmat - XSI shared memory attach operation void *shmat(int shmid, const void *shmaddr, int shmflg);
+shmctl sys/shm.h XSI shmctl - XSI shared memory control operations int shmctl(int shmid, int cmd, struct shmid_ds *buf);
+shmdt sys/shm.h XSI shmdt - XSI shared memory detach operation int shmdt(const void *shmaddr);
+shmget sys/shm.h XSI shmget - get an XSI shared memory segment int shmget(key_t key, size_t size, int shmflg);
+shutdown sys/socket.h shutdown - shut down socket send and receive operations int shutdown(int socket, int how);
+sigaction signal.h CX sigaction - examine and change a signal action int sigaction(int sig, const struct sigaction *restrict act, struct sigaction *restrict oact);
+sigaddset signal.h CX sigaddset - add a signal to a signal set int sigaddset(sigset_t *set, int signo);
+sigaltstack signal.h XSI sigaltstack - set and get signal alternate stack context int sigaltstack(const stack_t *restrict ss, stack_t *restrict oss);
+sigdelset signal.h CX sigdelset - delete a signal from a signal set int sigdelset(sigset_t *set, int signo);
+sigemptyset signal.h CX sigemptyset - initialize and empty a signal set int sigemptyset(sigset_t *set);
+sigfillset signal.h CX sigfillset - initialize and fill a signal set int sigfillset(sigset_t *set);
+sighold signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management int sighold(int sig);
+sigignore signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management int sigignore(int sig);
+siginterrupt signal.h OB XSI siginterrupt - allow signals to interrupt functions int siginterrupt(int sig, int flag);
+sigismember signal.h CX sigismember - test for a signal in a signal set int sigismember(const sigset_t *set, int signo);
+siglongjmp setjmp.h CX siglongjmp - non-local goto with signal handling void siglongjmp(sigjmp_buf env, int val);
+signal signal.h signal - signal management void (*signal(int sig, void (*func)(int)))(int);
+signbit math.h signbit - test sign int signbit(real-floating x);
+signgam math.h XSI lgamma, lgammaf, lgammal, signgam - log gamma function
+sigpause signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management int sigpause(int sig);
+sigpending signal.h CX sigpending - examine pending signals int sigpending(sigset_t *set);
+sigprocmask signal.h CX pthread_sigmask, sigprocmask - examine and change blocked signals int sigprocmask(int how, const sigset_t *restrict set, sigset_t *restrict oset);
+sigqueue signal.h CX sigqueue - queue a signal to a process int sigqueue(pid_t pid, int signo, const union sigval value);
+sigrelse signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management int sigrelse(int sig);
+sigset signal.h OB XSI sighold, sigignore, sigpause, sigrelse, sigset - signal management void (*sigset(int sig, void (*disp)(int)))(int);
+sigsetjmp setjmp.h CX sigsetjmp - set jump point for a non-local goto int sigsetjmp(sigjmp_buf env, int savemask);
+sigsuspend signal.h CX sigsuspend - wait for a signal int sigsuspend(const sigset_t *sigmask);
+sigtimedwait signal.h CX sigtimedwait, sigwaitinfo - wait for queued signals int sigtimedwait(const sigset_t *restrict set, siginfo_t *restrict info, const struct timespec *restrict timeout);
+sigwait signal.h CX sigwait - wait for queued signals int sigwait(const sigset_t *restrict set, int *restrict sig);
+sigwaitinfo signal.h CX sigtimedwait, sigwaitinfo - wait for queued signals int sigwaitinfo(const sigset_t *restrict set, siginfo_t *restrict info);
+sin math.h sin, sinf, sinl - sine function double sin(double x);
+sinf math.h sin, sinf, sinl - sine function float sinf(float x);
+sinh math.h sinh, sinhf, sinhl - hyperbolic sine functions double sinh(double x);
+sinhf math.h sinh, sinhf, sinhl - hyperbolic sine functions float sinhf(float x);
+sinhl math.h sinh, sinhf, sinhl - hyperbolic sine functions long double sinhl(long double x);
+sinl math.h sin, sinf, sinl - sine function long double sinl(long double x);
+sleep unistd.h sleep - suspend execution for an interval of time unsigned sleep(unsigned seconds);
+snprintf stdio.h dprintf, fprintf, printf, snprintf, sprintf - print formatted output int snprintf(char *restrict s, size_t n, const char *restrict format, ...);
+sockatmark sys/socket.h sockatmark - determine whether a socket is at the out-of-band mark int sockatmark(int s);
+socket sys/socket.h socket - create an endpoint for communication int socket(int domain, int type, int protocol);
+socketpair sys/socket.h socketpair - create a pair of connected sockets int socketpair(int domain, int type, int protocol, int socket_vector[2]);
+sprintf stdio.h dprintf, fprintf, printf, snprintf, sprintf - print formatted output int sprintf(char *restrict s, const char *restrict format, ...);
+sqrt math.h sqrt, sqrtf, sqrtl - square root function double sqrt(double x);
+sqrtf math.h sqrt, sqrtf, sqrtl - square root function float sqrtf(float x);
+sqrtl math.h sqrt, sqrtf, sqrtl - square root function long double sqrtl(long double x);
+srand stdlib.h rand, rand_r, srand - pseudo-random number generator void srand(unsigned seed);
+srand48 stdlib.h XSI drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers void srand48(long seedval);
+srandom stdlib.h XSI initstate, random, setstate, srandom - pseudo-random number functions void srandom(unsigned seed);
+sscanf stdio.h fscanf, scanf, sscanf - convert formatted input int sscanf(const char *restrict s, const char *restrict format, ...);
+stat sys/stat.h fstatat, lstat, stat - get file status int stat(const char *restrict path, struct stat *restrict buf);
+statvfs sys/statvfs.h fstatvfs, statvfs - get file system information int statvfs(const char *restrict path, struct statvfs *restrict buf);
+stderr stdio.h stderr, stdin, stdout - standard I/O streams
+stdin stdio.h stderr, stdin, stdout - standard I/O streams
+stdout stdio.h stderr, stdin, stdout - standard I/O streams
+stpcpy string.h CX stpcpy, strcpy - copy a string and return a pointer to the end of the result char *stpcpy(char *restrict s1, const char *restrict s2);
+stpncpy string.h CX stpncpy, strncpy - copy fixed length string, returning a pointer to the array end char *stpncpy(char *restrict s1, const char *restrict s2, size_t n);
+strcasecmp strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons int strcasecmp(const char *s1, const char *s2);
+strcasecmp_l strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons int strcasecmp_l(const char *s1, const char *s2, locale_t locale);
+strcat string.h strcat - concatenate two strings char *strcat(char *restrict s1, const char *restrict s2);
+strchr string.h strchr - string scanning operation char *strchr(const char *s, int c);
+strcmp string.h strcmp - compare two strings int strcmp(const char *s1, const char *s2);
+strcoll string.h strcoll, strcoll_l - string comparison using collating information int strcoll(const char *s1, const char *s2);
+strcoll_l string.h CX strcoll, strcoll_l - string comparison using collating information int strcoll_l(const char *s1, const char *s2, locale_t locale);
+strcpy string.h stpcpy, strcpy - copy a string and return a pointer to the end of the result char *strcpy(char *restrict s1, const char *restrict s2);
+strcspn string.h strcspn - get the length of a complementary substring size_t strcspn(const char *s1, const char *s2);
+strdup string.h CX strdup, strndup - duplicate a specific number of bytes from a string char *strdup(const char *s);
+strerror string.h strerror, strerror_l, strerror_r - get error message string char *strerror(int errnum);
+strerror_l string.h CX strerror, strerror_l, strerror_r - get error message string char *strerror_l(int errnum, locale_t locale);
+strerror_r string.h CX strerror, strerror_l, strerror_r - get error message string int strerror_r(int errnum, char *strerrbuf, size_t buflen);
+strfmon monetary.h strfmon, strfmon_l - convert monetary value to a string ssize_t strfmon(char *restrict s, size_t maxsize, const char *restrict format, ...);
+strfmon_l monetary.h strfmon, strfmon_l - convert monetary value to a string ssize_t strfmon_l(char *restrict s, size_t maxsize, locale_t locale, const char *restrict format, ...);
+strftime time.h strftime, strftime_l - convert date and time to a string size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr);
+strftime_l time.h CX strftime, strftime_l - convert date and time to a string size_t strftime_l(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr, locale_t locale);
+strlen string.h strlen, strnlen - get length of fixed size string size_t strlen(const char *s);
+strncasecmp strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons int strncasecmp(const char *s1, const char *s2, size_t n);
+strncasecmp_l strings.h strcasecmp, strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons int strncasecmp_l(const char *s1, const char *s2, size_t n, locale_t locale);
+strncat string.h strncat - concatenate a string with part of another char *strncat(char *restrict s1, const char *restrict s2, size_t n);
+strncmp string.h strncmp - compare part of two strings int strncmp(const char *s1, const char *s2, size_t n);
+strncpy string.h stpncpy, strncpy - copy fixed length string, returning a pointer to the array end char *strncpy(char *restrict s1, const char *restrict s2, size_t n);
+strndup string.h CX strdup, strndup - duplicate a specific number of bytes from a string char *strndup(const char *s, size_t size);
+strnlen string.h CX strlen, strnlen - get length of fixed size string size_t strnlen(const char *s, size_t maxlen);
+strpbrk string.h strpbrk - scan a string for a byte char *strpbrk(const char *s1, const char *s2);
+strptime time.h XSI strptime - date and time conversion char *strptime(const char *restrict buf, const char *restrict format, struct tm *restrict tm);
+strrchr string.h strrchr - string scanning operation char *strrchr(const char *s, int c);
+strsignal string.h CX strsignal - get name of signal char *strsignal(int signum);
+strspn string.h strspn - get length of a substring size_t strspn(const char *s1, const char *s2);
+strstr string.h strstr - find a substring char *strstr(const char *s1, const char *s2);
+strtod stdlib.h strtod, strtof, strtold - convert a string to a double-precision number double strtod(const char *restrict nptr, char **restrict endptr);
+strtof stdlib.h strtod, strtof, strtold - convert a string to a double-precision number float strtof(const char *restrict nptr, char **restrict endptr);
+strtoimax inttypes.h strtoimax, strtoumax - convert string to integer type intmax_t strtoimax(const char *restrict nptr, char **restrict endptr, int base);
+strtok string.h strtok, strtok_r - split string into tokens char *strtok(char *restrict s1, const char *restrict s2);
+strtok_r string.h CX strtok, strtok_r - split string into tokens char *strtok_r(char *restrict s, const char *restrict sep, char **restrict lasts);
+strtol stdlib.h strtol, strtoll - convert a string to a long integer long strtol(const char *restrict str, char **restrict endptr, int base);
+strtold stdlib.h strtod, strtof, strtold - convert a string to a double-precision number long double strtold(const char *restrict nptr, char **restrict endptr);
+strtoll stdlib.h strtol, strtoll - convert a string to a long integer long long strtoll(const char *restrict str, char **restrict endptr, int base);
+strtoul stdlib.h strtoul, strtoull - convert a string to an unsigned long unsigned long strtoul(const char *restrict str, char **restrict endptr, int base);
+strtoull stdlib.h strtoul, strtoull - convert a string to an unsigned long unsigned long long strtoull(const char *restrict str, char **restrict endptr, int base);
+strtoumax inttypes.h strtoimax, strtoumax - convert string to integer type uintmax_t strtoumax(const char *restrict nptr, char **restrict endptr, int base);
+strxfrm string.h strxfrm, strxfrm_l - string transformation size_t strxfrm(char *restrict s1, const char *restrict s2, size_t n);
+strxfrm_l string.h CX strxfrm, strxfrm_l - string transformation size_t strxfrm_l(char *restrict s1, const char *restrict s2, size_t n, locale_t locale);
+swab unistd.h XSI swab - swap bytes void swab(const void *restrict src, void *restrict dest, ssize_t nbytes);
+swprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output int swprintf(wchar_t *restrict ws, size_t n, const wchar_t *restrict format, ...);
+swscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input int swscanf(const wchar_t *restrict ws, const wchar_t *restrict format, ...);
+symlink unistd.h symlink, symlinkat - make a symbolic link relative to directory file descriptor int symlink(const char *path1, const char *path2);
+symlinkat unistd.h symlink, symlinkat - make a symbolic link relative to directory file descriptor int symlinkat(const char *path1, int fd, const char *path2);
+sync unistd.h XSI sync - schedule file system updates void sync(void);
+sysconf unistd.h sysconf - get configurable system variables long sysconf(int name);
+syslog syslog.h XSI closelog, openlog, setlogmask, syslog - control system log void syslog(int priority, const char *message, ... /* arguments */);
+system stdlib.h system - issue a command int system(const char *command);
+tan math.h tan, tanf, tanl - tangent function double tan(double x);
+tanf math.h tan, tanf, tanl - tangent function float tanf(float x);
+tanh math.h tanh, tanhf, tanhl - hyperbolic tangent functions double tanh(double x);
+tanhf math.h tanh, tanhf, tanhl - hyperbolic tangent functions float tanhf(float x);
+tanhl math.h tanh, tanhf, tanhl - hyperbolic tangent functions long double tanhl(long double x);
+tanl math.h tan, tanf, tanl - tangent function long double tanl(long double x);
+tcdrain termios.h tcdrain - wait for transmission of output int tcdrain(int fildes);
+tcflow termios.h tcflow - suspend or restart the transmission or reception of data int tcflow(int fildes, int action);
+tcflush termios.h tcflush - flush non-transmitted output data, non-read input data, or both int tcflush(int fildes, int queue_selector);
+tcgetattr termios.h tcgetattr - get the parameters associated with the terminal int tcgetattr(int fildes, struct termios *termios_p);
+tcgetpgrp unistd.h tcgetpgrp - get the foreground process group ID pid_t tcgetpgrp(int fildes);
+tcgetsid termios.h tcgetsid - get the process group ID for the session leader for the controlling terminal pid_t tcgetsid(int fildes);
+tcsendbreak termios.h tcsendbreak - send a break for a specific duration int tcsendbreak(int fildes, int duration);
+tcsetattr termios.h tcsetattr - set the parameters associated with the terminal int tcsetattr(int fildes, int optional_actions, const struct termios *termios_p);
+tcsetpgrp unistd.h tcsetpgrp - set the foreground process group ID int tcsetpgrp(int fildes, pid_t pgid_id);
+tdelete search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree void *tdelete(const void *restrict key, void **restrict rootp, int(*compar)(const void *, const void *));
+telldir dirent.h XSI telldir - current location of a named directory stream long telldir(DIR *dirp);
+tempnam stdio.h OB XSI tempnam - create a name for a temporary file char *tempnam(const char *dir, const char *pfx);
+tfind search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree void *tfind(const void *key, void *const *rootp, int(*compar)(const void *, const void *));
+tgamma math.h tgamma, tgammaf, tgammal - compute gamma() function double tgamma(double x);
+tgammaf math.h tgamma, tgammaf, tgammal - compute gamma() function float tgammaf(float x);
+tgammal math.h tgamma, tgammaf, tgammal - compute gamma() function long double tgammal(long double x);
+time time.h time - get time time_t time(time_t *tloc);
+timer_create signal.h time.h CX timer_create - create a per-process timer int timer_create(clockid_t clockid, struct sigevent *restrict evp, timer_t *restrict timerid);
+timer_delete time.h CX timer_delete - delete a per-process timer int timer_delete(timer_t timerid);
+timer_getoverrun time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers int timer_getoverrun(timer_t timerid);
+timer_gettime time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers int timer_gettime(timer_t timerid, struct itimerspec *value);
+timer_settime time.h CX timer_getoverrun, timer_gettime, timer_settime - per-process timers int timer_settime(timer_t timerid, int flags, const struct itimerspec *restrict value, struct itimerspec *restrict ovalue);
+times sys/times.h times - get process and waited-for child process times clock_t times(struct tms *buffer);
+timezone time.h XSI daylight, timezone, tzname, tzset - set timezone conversion information
+tmpfile stdio.h tmpfile - create a temporary file FILE *tmpfile(void);
+tmpnam stdio.h OB tmpnam - create a name for a temporary file char *tmpnam(char *s);
+toascii ctype.h OB XSI toascii - translate an integer to a 7-bit ASCII character int toascii(int c);
+tolower ctype.h tolower, tolower_l - transliterate uppercase characters to lowercase int tolower(int c);
+tolower_l ctype.h CX tolower, tolower_l - transliterate uppercase characters to lowercase int tolower_l(int c, locale_t locale);
+toupper ctype.h toupper, toupper_l - transliterate lowercase characters to uppercase int toupper(int c);
+toupper_l ctype.h CX toupper, toupper_l - transliterate lowercase characters to uppercase int toupper_l(int c, locale_t locale);
+towctrans wctype.h towctrans, towctrans_l - wide-character transliteration wint_t towctrans(wint_t wc, wctrans_t desc);
+towctrans_l wctype.h CX towctrans, towctrans_l - wide-character transliteration wint_t towctrans_l(wint_t wc, wctrans_t desc, locale_t locale);
+towlower wctype.h towlower, towlower_l - transliterate uppercase wide-character code to lowercase wint_t towlower(wint_t wc);
+towlower_l wctype.h CX towlower, towlower_l - transliterate uppercase wide-character code to lowercase wint_t towlower_l(wint_t wc, locale_t locale);
+towupper wctype.h towupper, towupper_l - transliterate lowercase wide-character code to uppercase wint_t towupper(wint_t wc);
+towupper_l wctype.h CX towupper, towupper_l - transliterate lowercase wide-character code to uppercase wint_t towupper_l(wint_t wc, locale_t locale);
+trunc math.h trunc, truncf, truncl - round to truncated integer value double trunc(double x);
+truncate unistd.h truncate - truncate a file to a specified length int truncate(const char *path, off_t length);
+truncf math.h trunc, truncf, truncl - round to truncated integer value float truncf(float x);
+truncl math.h trunc, truncf, truncl - round to truncated integer value long double truncl(long double x);
+tsearch search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree void *tsearch(const void *key, void **rootp, int (*compar)(const void *, const void *));
+ttyname unistd.h ttyname, ttyname_r - find the pathname of a terminal char *ttyname(int fildes);
+ttyname_r unistd.h ttyname, ttyname_r - find the pathname of a terminal int ttyname_r(int fildes, char *name, size_t namesize);
+twalk search.h XSI tdelete, tfind, tsearch, twalk - manage a binary search tree void twalk(const void *root, void (*action)(const void *, VISIT, int));
+tzname time.h CX daylight, timezone, tzname, tzset - set timezone conversion information
+tzset time.h CX daylight, timezone, tzname, tzset - set timezone conversion information void tzset(void);
+ulimit ulimit.h OB XSI ulimit - get and set process limits long ulimit(int cmd, ...);
+umask sys/stat.h umask - set and get the file mode creation mask mode_t umask(mode_t cmask);
+uname sys/utsname.h uname - get the name of the current system int uname(struct utsname *name);
+ungetc stdio.h ungetc - push byte back into input stream int ungetc(int c, FILE *stream);
+ungetwc stdio.h wchar.h ungetwc - push wide-character code back into the input stream wint_t ungetwc(wint_t wc, FILE *stream);
+unlink unistd.h unlink, unlinkat - remove a directory entry relative to directory file descriptor int unlink(const char *path);
+unlinkat unistd.h unlink, unlinkat - remove a directory entry relative to directory file descriptor int unlinkat(int fd, const char *path, int flag);
+unlockpt stdlib.h XSI unlockpt - unlock a pseudo-terminal master/slave pair int unlockpt(int fildes);
+unsetenv stdlib.h CX unsetenv - remove an environment variable int unsetenv(const char *name);
+uselocale locale.h CX uselocale - use locale in current thread locale_t uselocale(locale_t newloc);
+utime utime.h OB utime - set file access and modification times int utime(const char *path, const struct utimbuf *times);
+utimensat sys/stat.h sys/time.h futimens, utimensat, utimes - set file access and modification times int utimensat(int fd, const char *path, const struct timespec times[2], int flag);
+utimes sys/stat.h sys/time.h XSI futimens, utimensat, utimes - set file access and modification times int utimes(const char *path, const struct timeval times[2]);
+va_arg stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list type va_arg(va_list ap, type);
+va_copy stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list void va_copy(va_list dest, va_list src);
+va_end stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list void va_end(va_list ap);
+va_start stdarg.h va_arg, va_copy, va_end, va_start - handle variable argument list void va_start(va_list ap, argN);
+vdprintf stdarg.h stdio.h CX vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list int vdprintf(int fildes, const char *restrict format, va_list ap);
+vfprintf stdarg.h stdio.h vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap);
+vfscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list int vfscanf(FILE *restrict stream, const char *restrict format, va_list arg);
+vfwprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list int vfwprintf(FILE *restrict stream, const wchar_t *restrict format, va_list arg);
+vfwscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list int vfwscanf(FILE *restrict stream, const wchar_t *restrict format, va_list arg);
+vprintf stdarg.h stdio.h vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list int vprintf(const char *restrict format, va_list ap);
+vscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list int vscanf(const char *restrict format, va_list arg);
+vsnprintf stdarg.h stdio.h vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list int vsnprintf(char *restrict s, size_t n, const char *restrict format, va_list ap);
+vsprintf stdarg.h stdio.h vdprintf, vfprintf, vprintf, vsnprintf, vsprintf - format output of a stdarg argument list int vsprintf(char *restrict s, const char *restrict format, va_list ap);
+vsscanf stdarg.h stdio.h vfscanf, vscanf, vsscanf - format input of a stdarg argument list int vsscanf(const char *restrict s, const char *restrict format, va_list arg);
+vswprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list int vswprintf(wchar_t *restrict ws, size_t n, const wchar_t *restrict format, va_list arg);
+vswscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list int vswscanf(const wchar_t *restrict ws, const wchar_t *restrict format, va_list arg);
+vwprintf stdarg.h stdio.h wchar.h vfwprintf, vswprintf, vwprintf - wide-character formatted output of a stdarg argument list int vwprintf(const wchar_t *restrict format, va_list arg);
+vwscanf stdarg.h stdio.h wchar.h vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list int vwscanf(const wchar_t *restrict format, va_list arg);
+wait sys/wait.h wait, waitpid - wait for a child process to stop or terminate pid_t wait(int *stat_loc);
+waitid sys/wait.h waitid - wait for a child process to change state int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options);
+waitpid sys/wait.h wait, waitpid - wait for a child process to stop or terminate pid_t waitpid(pid_t pid, int *stat_loc, int options);
+wcpcpy wchar.h CX wcpcpy, wcscpy - copy a wide-character string, returning a pointer to its end wchar_t *wcpcpy(wchar_t *restrict ws1, const wchar_t *restrict ws2);
+wcpncpy wchar.h CX wcpncpy, wcsncpy - copy a fixed-size wide-character string, returning a pointer to its end wchar_t *wcpncpy(wchar_t restrict *ws1, const wchar_t *restrict ws2, size_t n);
+wcrtomb stdio.h wcrtomb - convert a wide-character code to a character (restartable) size_t wcrtomb(char *restrict s, wchar_t wc, mbstate_t *restrict ps);
+wcscasecmp wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison int wcscasecmp(const wchar_t *ws1, const wchar_t *ws2);
+wcscasecmp_l wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison int wcscasecmp_l(const wchar_t *ws1, const wchar_t *ws2, locale_t locale);
+wcscat wchar.h wcscat - concatenate two wide-character strings wchar_t *wcscat(wchar_t *restrict ws1, const wchar_t *restrict ws2);
+wcschr wchar.h wcschr - wide-character string scanning operation wchar_t *wcschr(const wchar_t *ws, wchar_t wc);
+wcscmp wchar.h wcscmp - compare two wide-character strings int wcscmp(const wchar_t *ws1, const wchar_t *ws2);
+wcscoll wchar.h wcscoll, wcscoll_l - wide-character string comparison using collating information int wcscoll(const wchar_t *ws1, const wchar_t *ws2);
+wcscoll_l wchar.h CX wcscoll, wcscoll_l - wide-character string comparison using collating information int wcscoll_l(const wchar_t *ws1, const wchar_t *ws2, locale_t locale);
+wcscpy wchar.h wcpcpy, wcscpy - copy a wide-character string, returning a pointer to its end wchar_t *wcscpy(wchar_t *restrict ws1, const wchar_t *restrict ws2);
+wcscspn wchar.h wcscspn - get the length of a complementary wide substring size_t wcscspn(const wchar_t *ws1, const wchar_t *ws2);
+wcsdup wchar.h CX wcsdup - duplicate a wide-character string wchar_t *wcsdup(const wchar_t *string);
+wcsftime wchar.h wcsftime - convert date and time to a wide-character string size_t wcsftime(wchar_t *restrict wcs, size_t maxsize, const wchar_t *restrict format, const struct tm *restrict timeptr);
+wcslen wchar.h wcslen, wcsnlen - get length of a fixed-sized wide-character string size_t wcslen(const wchar_t *ws);
+wcsncasecmp wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison int wcsncasecmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
+wcsncasecmp_l wchar.h CX wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l - case-insensitive wide-character string comparison int wcsncasecmp_l(const wchar_t *ws1, const wchar_t *ws2, size_t n, locale_t locale);
+wcsncat wchar.h wcsncat - concatenate a wide-character string with part of another wchar_t *wcsncat(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n);
+wcsncmp wchar.h wcsncmp - compare part of two wide-character strings int wcsncmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
+wcsncpy wchar.h wcpncpy, wcsncpy - copy a fixed-size wide-character string, returning a pointer to its end wchar_t *wcsncpy(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n);
+wcsnlen wchar.h CX wcslen, wcsnlen - get length of a fixed-sized wide-character string size_t wcsnlen(const wchar_t *ws, size_t maxlen);
+wcsnrtombs wchar.h CX wcsnrtombs, wcsrtombs - convert a wide-character string to a character string (restartable) size_t wcsnrtombs(char *restrict dst, const wchar_t **restrict src, size_t nwc, size_t len, mbstate_t *restrict ps);
+wcspbrk wchar.h wcspbrk - scan a wide-character string for a wide-character code wchar_t *wcspbrk(const wchar_t *ws1, const wchar_t *ws2);
+wcsrchr wchar.h wcsrchr - wide-character string scanning operation wchar_t *wcsrchr(const wchar_t *ws, wchar_t wc);
+wcsrtombs wchar.h wcsnrtombs, wcsrtombs - convert a wide-character string to a character string (restartable) size_t wcsrtombs(char *restrict dst, const wchar_t **restrict src, size_t len, mbstate_t *restrict ps);
+wcsspn wchar.h wcsspn - get the length of a wide substring size_t wcsspn(const wchar_t *ws1, const wchar_t *ws2);
+wcsstr wchar.h wcsstr - find a wide-character substring wchar_t *wcsstr(const wchar_t *restrict ws1, const wchar_t *restrict ws2);
+wcstod wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number double wcstod(const wchar_t *restrict nptr, wchar_t **restrict endptr);
+wcstof wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number float wcstof(const wchar_t *restrict nptr, wchar_t **restrict endptr);
+wcstoimax stddef.h inttypes.h wcstoimax, wcstoumax - convert a wide-character string to an integer type intmax_t wcstoimax(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcstok wchar.h wcstok - split a wide-character string into tokens wchar_t *wcstok(wchar_t *restrict ws1, const wchar_t *restrict ws2, wchar_t **restrict ptr);
+wcstol wchar.h wcstol, wcstoll - convert a wide-character string to a long integer long wcstol(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcstold wchar.h wcstod, wcstof, wcstold - convert a wide-character string to a double-precision number long double wcstold(const wchar_t *restrict nptr, wchar_t **restrict endptr);
+wcstoll wchar.h wcstol, wcstoll - convert a wide-character string to a long integer long long wcstoll(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcstombs stdlib.h wcstombs - convert a wide-character string to a character string size_t wcstombs(char *restrict s, const wchar_t *restrict pwcs, size_t n);
+wcstoul wchar.h wcstoul, wcstoull - convert a wide-character string to an unsigned long unsigned long wcstoul(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcstoull wchar.h wcstoul, wcstoull - convert a wide-character string to an unsigned long unsigned long long wcstoull(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcstoumax stddef.h inttypes.h wcstoimax, wcstoumax - convert a wide-character string to an integer type uintmax_t wcstoumax(const wchar_t *restrict nptr, wchar_t **restrict endptr, int base);
+wcswidth wchar.h XSI wcswidth - number of column positions of a wide-character string int wcswidth(const wchar_t *pwcs, size_t n);
+wcsxfrm wchar.h wcsxfrm, wcsxfrm_l - wide-character string transformation size_t wcsxfrm(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n);
+wcsxfrm_l wchar.h CX wcsxfrm, wcsxfrm_l - wide-character string transformation size_t wcsxfrm_l(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n, locale_t locale);
+wctob stdio.h wchar.h wctob - wide-character to single-byte conversion int wctob(wint_t c);
+wctomb stdlib.h wctomb - convert a wide-character code to a character int wctomb(char *s, wchar_t wchar);
+wctrans wctype.h wctrans, wctrans_l - define character mapping wctrans_t wctrans(const char *charclass);
+wctrans_l wctype.h CX wctrans, wctrans_l - define character mapping wctrans_t wctrans_l(const char *charclass, locale_t locale);
+wctype wctype.h wctype, wctype_l - define character class wctype_t wctype(const char *property);
+wctype_l wctype.h CX wctype, wctype_l - define character class wctype_t wctype_l(const char *property, locale_t locale);
+wcwidth wchar.h XSI wcwidth - number of column positions of a wide-character code int wcwidth(wchar_t wc);
+wmemchr wchar.h wmemchr - find a wide character in memory wchar_t *wmemchr(const wchar_t *ws, wchar_t wc, size_t n);
+wmemcmp wchar.h wmemcmp - compare wide characters in memory int wmemcmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
+wmemcpy wchar.h wmemcpy - copy wide characters in memory wchar_t *wmemcpy(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n);
+wmemmove wchar.h wmemmove - copy wide characters in memory with overlapping areas wchar_t *wmemmove(wchar_t *ws1, const wchar_t *ws2, size_t n);
+wmemset wchar.h wmemset - set wide characters in memory wchar_t *wmemset(wchar_t *ws, wchar_t wc, size_t n);
+wordexp wordexp.h wordexp, wordfree - perform word expansions int wordexp(const char *restrict words, wordexp_t *restrict pwordexp, int flags);
+wordfree wordexp.h wordexp, wordfree - perform word expansions void wordfree(wordexp_t *pwordexp);
+wprintf stdio.h wchar.h fwprintf, swprintf, wprintf - print formatted wide-character output int wprintf(const wchar_t *restrict format, ...);
+write unistd.h pwrite, write - write on a file ssize_t write(int fildes, const void *buf, size_t nbyte);
+writev sys/uio.h XSI writev - write a vector ssize_t writev(int fildes, const struct iovec *iov, int iovcnt);
+wscanf stdio.h wchar.h fwscanf, swscanf, wscanf - convert formatted wide-character input int wscanf(const wchar_t *restrict format, ...);
+y0 math.h XSI y0, y1, yn - Bessel functions of the second kind double y0(double x);
+y1 math.h XSI y0, y1, yn - Bessel functions of the second kind double y1(double x);
+yn math.h XSI y0, y1, yn - Bessel functions of the second kind double yn(int n, double x);
projects / musl-tables / blobdiff