1#ifndef _CTYPE_H
2
3#include <ctype/ctype.h>
4
5#ifndef _ISOMAC
6/* Initialize ctype locale data. */
7extern void __ctype_init (void);
8libc_hidden_proto (__ctype_init)
9
10/* ctype/ctype.h defined this as a macro and we don't want to #undef it.
11 So defeat macro expansion with parens for this declaration. */
12extern int (__isctype) (int __c, int __mask);
13
14libc_hidden_proto (tolower)
15libc_hidden_proto (toupper)
16
17# if IS_IN (libc)
18
19/* These accessors are used by the optimized macros to find the
20 thread-local cache of ctype information from the current thread's
21 locale. For inside libc, define them as inlines using the _NL_CURRENT
22 accessors. We don't use _NL_CURRENT_LOCALE->__ctype_b here because we
23 want to cause a link-time ref to _nl_current_LC_CTYPE under
24 NL_CURRENT_INDIRECT. */
25
26# include "../locale/localeinfo.h"
27# include <libc-tsd.h>
28
29# ifndef CTYPE_EXTERN_INLINE /* Used by ctype/ctype-info.c, which see. */
30# define CTYPE_EXTERN_INLINE extern inline
31# endif
32
33__libc_tsd_define (extern, const uint16_t *, CTYPE_B)
34__libc_tsd_define (extern, const int32_t *, CTYPE_TOUPPER)
35__libc_tsd_define (extern, const int32_t *, CTYPE_TOLOWER)
36
37
38CTYPE_EXTERN_INLINE const uint16_t ** __attribute__ ((const))
39__ctype_b_loc (void)
40{
41 return __libc_tsd_address (const uint16_t *, CTYPE_B);
42}
43
44CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
45__ctype_toupper_loc (void)
46{
47 return __libc_tsd_address (const int32_t *, CTYPE_TOUPPER);
48}
49
50CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
51__ctype_tolower_loc (void)
52{
53 return __libc_tsd_address (const int32_t *, CTYPE_TOLOWER);
54}
55
56# ifndef __NO_CTYPE
57/* The spec says that isdigit must only match the decimal digits. We
58 can check this without a memory access. */
59# undef isdigit
60# define isdigit(c) ({ int __c = (c); __c >= '0' && __c <= '9'; })
61# undef isdigit_l
62# define isdigit_l(c, l) ({ int __c = (c); __c >= '0' && __c <= '9'; })
63# undef __isdigit_l
64# define __isdigit_l(c, l) ({ int __c = (c); __c >= '0' && __c <= '9'; })
65# endif /* Not __NO_CTYPE. */
66
67# endif /* IS_IN (libc). */
68#endif /* Not _ISOMAC. */
69
70#endif /* ctype.h */
71

source code of glibc/include/ctype.h