X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=include%2Fmath.h;h=656f7868d8c1e35fd0bc540dceeb18899c127398;hp=677248287ae99470346db96e5d64926ed12b7645;hb=2242bf616b893e85886ed0a2348b96bf1cf7623e;hpb=e0037efc1253e190c7c75f74e5a05333fdd807bb diff --git a/include/math.h b/include/math.h index 67724828..656f7868 100644 --- a/include/math.h +++ b/include/math.h @@ -1,28 +1,35 @@ #ifndef _MATH_H #define _MATH_H +#ifdef __cplusplus +extern "C" { +#endif + +#define __NEED_float_t +#define __NEED_double_t #define __NEED___uint16_t #define __NEED___uint32_t #define __NEED___uint64_t #include -#define __MAKE_FLOAT(i) (((union { int __i; float __f; }){ .__i = i }).__f) - -#define NAN __MAKE_FLOAT(0x7fc00000) -#define INFINITY __MAKE_FLOAT(0x7f800000) +#if 100*__GNUC__+__GNUC_MINOR__ >= 303 +#define NAN __builtin_nanf("") +#define INFINITY __builtin_inff() +#else +#define NAN (0.0f/0.0f) +#define INFINITY 1e40f +#endif #define HUGE_VALF INFINITY #define HUGE_VAL ((double)INFINITY) #define HUGE_VALL ((long double)INFINITY) -#define MAXFLOAT __MAKE_FLOAT(0x7f7fffff) - #define MATH_ERRNO 1 -#define MATH_EXCEPT 2 +#define MATH_ERREXCEPT 2 #define math_errhandling 2 -#define FP_ILOGBNAN (((unsigned)-1)>>1) -#define FP_ILOGB0 (~FP_ILOGBNAN) +#define FP_ILOGBNAN (-1-(int)(((unsigned)-1)>>1)) +#define FP_ILOGB0 FP_ILOGBNAN #define FP_NAN 0 #define FP_INFINITE 1 @@ -30,23 +37,56 @@ #define FP_SUBNORMAL 3 #define FP_NORMAL 4 -int __fpclassifyf(float); int __fpclassify(double); +int __fpclassifyf(float); int __fpclassifyl(long double); +union __float_repr { float __f; __uint32_t __i; }; +union __double_repr { double __f; __uint64_t __i; }; + +#define __FLOAT_BITS(f) (((union __float_repr){ (float)(f) }).__i) +#define __DOUBLE_BITS(f) (((union __double_repr){ (double)(f) }).__i) + #define fpclassify(x) ( \ sizeof(x) == sizeof(float) ? __fpclassifyf(x) : \ sizeof(x) == sizeof(double) ? __fpclassify(x) : \ __fpclassifyl(x) ) -#define isinf(x) (fpclassify(x) == FP_INFINITE) -#define isnan(x) (fpclassify(x) == FP_NAN) -#define isnormal(x) (fpclassify(x) == FP_NORMAL) -#define isfinite(x) (fpclassify(x) > FP_INFINITE) +#define isinf(x) ( \ + sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) == 0x7f800000 : \ + sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) == (__uint64_t)0x7ff<<52 : \ + __fpclassifyl(x) == FP_INFINITE) + +#define isnan(x) ( \ + sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) > 0x7f800000 : \ + sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) > (__uint64_t)0x7ff<<52 : \ + __fpclassifyl(x) == FP_NAN) + +#define isnormal(x) ( \ + sizeof(x) == sizeof(float) ? ((__FLOAT_BITS(x)+0x00800000) & 0x7fffffff) >= 0x01000000 : \ + sizeof(x) == sizeof(double) ? ((__DOUBLE_BITS(x)+((__uint64_t)1<<52)) & (__uint64_t)-1>>1) >= (__uint64_t)1<<53 : \ + __fpclassifyl(x) == FP_NORMAL) + +#define isfinite(x) ( \ + sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) < 0x7f800000 : \ + sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) < (__uint64_t)0x7ff<<52 : \ + __fpclassifyl(x) > FP_INFINITE) + +int __signbit(double); +int __signbitf(float); +int __signbitl(long double); + +#define signbit(x) ( \ + sizeof(x) == sizeof(float) ? (int)(__FLOAT_BITS(x)>>31) : \ + sizeof(x) == sizeof(double) ? (int)(__DOUBLE_BITS(x)>>63) : \ + __signbitl(x) ) -#define isunordered(x,y) (isnan((x)) ? ((y),1) : isnan((y))) +#define isunordered(x,y) (isnan((x)) ? ((void)(y),1) : isnan((y))) -static inline int __isrel(long double __x, long double __y, int __rel) +#if __STDC_VERSION__ >= 199901L +inline +#endif +static int __isrel(long double __x, long double __y, int __rel) { if (isunordered(__x, __y)) return 0; if (__rel==-2) return __x < __y; @@ -159,8 +199,8 @@ float fmodf(float, float); long double fmodl(long double, long double); double frexp(double, int *); -float frexpf(float value, int *); -long double frexpl(long double value, int *); +float frexpf(float, int *); +long double frexpl(long double, int *); double hypot(double, double); float hypotf(float, float); @@ -290,7 +330,7 @@ double trunc(double); float truncf(float); long double truncl(long double); -#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) #define M_E 2.7182818284590452354 /* e */ #define M_LOG2E 1.4426950408889634074 /* log_2 e */ #define M_LOG10E 0.43429448190325182765 /* log_10 e */ @@ -304,17 +344,70 @@ long double truncl(long double); #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ +#endif + +#if defined(_XOPEN_SOURCE) +#define MAXFLOAT 3.40282347e+38F +#endif + +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) +extern int signgam; + double j0(double); double j1(double); double jn(int, double); + double y0(double); double y1(double); double yn(int, double); -extern int signgam; #endif #ifdef _GNU_SOURCE +#define HUGE 3.40282347e+38F double scalb(double, double); +float scalbf(float, float); +long double scalbl(long double, long double); + +void sincos(double, double*, double*); +void sincosf(float, float*, float*); +void sincosl(long double, long double*, long double*); + +double gamma(double); +float gammaf(float); +long double gammal(long double); + +double lgamma_r(double, int*); +float lgammaf_r(float, int*); +long double lgammal_r(long double, int*); + +float j0f(float); +long double j0l(long double); +float j1f(float); +long double j1l(long double); +float jnf(int, float); +long double jnl(int, long double); + +float y0f(float); +long double y0l(long double); +float y1f(float); +long double y1l(long double); +float ynf(int, float); +long double ynl(int, long double); + +double exp10(double); +float exp10f(float); +long double exp10l(long double); +double pow10(double); +float pow10f(float); +long double pow10l(long double); + +double significand(double); +float significandf(float); +long double significandl(long double); +#endif + +#ifdef __cplusplus +} #endif #endif