23 #define isalpha(a) ((((unsigned)(a)|32)-'a') < 26)
24 #define isdigit(a) (((unsigned)(a)-'0') < 10)
25 #define islower(a) (((unsigned)(a)-'a') < 26)
26 #define isupper(a) (((unsigned)(a)-'A') < 26)
27 #define isprint(a) (((unsigned)(a)-0x20) < 0x5f)
28 #define isgraph(a) (((unsigned)(a)-0x21) < 0x5e)
32 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
33 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
34 || defined(_BSD_SOURCE)
36 #define __NEED_locale_t
37 #include <bits/alltypes.h>
39 int isalnum_l(int, locale_t);
40 int isalpha_l(int, locale_t);
41 int isblank_l(int, locale_t);
42 int iscntrl_l(int, locale_t);
43 int isdigit_l(int, locale_t);
44 int isgraph_l(int, locale_t);
45 int islower_l(int, locale_t);
46 int isprint_l(int, locale_t);
47 int ispunct_l(int, locale_t);
48 int isspace_l(int, locale_t);
49 int isupper_l(int, locale_t);
50 int isxdigit_l(int, locale_t);
51 int tolower_l(int, locale_t);
52 int toupper_l(int, locale_t);
56 #define _tolower(a) ((a)|0x20)
57 #define _toupper(a) ((a)&0x5f)