include/ctype.h

   1 #ifndef _CTYPE_H
   2 #define _CTYPE_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <features.h>
   9
  10 int   isalnum(int);
  11 int   isalpha(int);
  12 int   isblank(int);
  13 int   iscntrl(int);
  14 int   isdigit(int);
  15 int   isgraph(int);
  16 int   islower(int);
  17 int   isprint(int);
  18 int   ispunct(int);
  19 int   isspace(int);
  20 int   isupper(int);
  21 int   isxdigit(int);
  22 int   tolower(int);
  23 int   toupper(int);
  24
  25 #define isalpha(a) ((((unsigned)(a)|32)-'a') < 26)
  26 #define isdigit(a) (((unsigned)(a)-'0') < 10)
  27 #define islower(a) (((unsigned)(a)-'a') < 26)
  28 #define isupper(a) (((unsigned)(a)-'A') < 26)
  29 #define isprint(a) (((unsigned)(a)-0x20) < 0x5f)
  30 #define isgraph(a) (((unsigned)(a)-0x21) < 0x5e)
  31
  32
  33
  34 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  35  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
  36  || defined(_BSD_SOURCE)
  37
  38 #define __NEED_locale_t
  39 #include <bits/alltypes.h>
  40
  41 int   isalnum_l(int, locale_t);
  42 int   isalpha_l(int, locale_t);
  43 int   isblank_l(int, locale_t);
  44 int   iscntrl_l(int, locale_t);
  45 int   isdigit_l(int, locale_t);
  46 int   isgraph_l(int, locale_t);
  47 int   islower_l(int, locale_t);
  48 int   isprint_l(int, locale_t);
  49 int   ispunct_l(int, locale_t);
  50 int   isspace_l(int, locale_t);
  51 int   isupper_l(int, locale_t);
  52 int   isxdigit_l(int, locale_t);
  53 int   tolower_l(int, locale_t);
  54 int   toupper_l(int, locale_t);
  55
  56 int   isascii(int);
  57 int   toascii(int);
  58 #define _tolower(a) ((a)|0x20)
  59 #define _toupper(a) ((a)&0x5f)
  60
  61 #endif
  62
  63 #ifdef __cplusplus
  64 }
  65 #endif
  66
  67 #endif