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