1 /* Copyright (C) 1991,1992,1996,1997,1999,2000,2001,2009,2010 2 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 #ifndef _STRINGS_H 21 #define _STRINGS_H 1 22 23 /* We don't need and should not read this file if <string.h> was already 24 read. The one exception being that if __USE_BSD isn't defined, then 25 these aren't defined in string.h, so we need to define them here. */ 26 #if !defined _STRING_H || !defined __USE_BSD 27 28 # include <features.h> 29 # define __need_size_t 30 # include <stddef.h> 31 32 /* Tell the caller that we provide correct C++ prototypes. */ 33 # if defined __cplusplus && __GNUC_PREREQ (4, 4) 34 # define __CORRECT_ISO_CPP_STRINGS_H_PROTO 35 # endif 36 37 __BEGIN_DECLS 38 39 # if defined __USE_MISC || !defined __USE_XOPEN2K8 40 /* Compare N bytes of S1 and S2 (same as memcmp). */ 41 extern int bcmp (__const void *__s1, __const void *__s2, size_t __n) 42 __THROW __attribute_pure__; 43 44 /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ 45 extern void bcopy (__const void *__src, void *__dest, size_t __n) __THROW; 46 47 /* Set N bytes of S to 0. */ 48 extern void bzero (void *__s, size_t __n) __THROW; 49 50 /* Find the first occurrence of C in S (same as strchr). */ 51 # ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO 52 extern "C++" 53 { 54 extern char *index (char *__s, int __c) 55 __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); 56 extern __const char *index (__const char *__s, int __c) 57 __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); 58 59 # if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO 60 __extern_always_inline char * 61 index (char *__s, int __c) __THROW 62 { 63 return __builtin_index (__s, __c); 64 } 65 66 __extern_always_inline __const char * 67 index (__const char *__s, int __c) __THROW 68 { 69 return __builtin_index (__s, __c); 70 } 71 # endif 72 } 73 # else 74 extern char *index (__const char *__s, int __c) 75 __THROW __attribute_pure__ __nonnull ((1)); 76 # endif 77 78 /* Find the last occurrence of C in S (same as strrchr). */ 79 # ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO 80 extern "C++" 81 { 82 extern char *rindex (char *__s, int __c) 83 __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); 84 extern __const char *rindex (__const char *__s, int __c) 85 __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); 86 87 # if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO 88 __extern_always_inline char * 89 rindex (char *__s, int __c) __THROW 90 { 91 return __builtin_rindex (__s, __c); 92 } 93 94 __extern_always_inline __const char * 95 rindex (__const char *__s, int __c) __THROW 96 { 97 return __builtin_rindex (__s, __c); 98 } 99 # endif 100 } 101 # else 102 extern char *rindex (__const char *__s, int __c) 103 __THROW __attribute_pure__ __nonnull ((1)); 104 # endif 105 # endif 106 107 #if defined __USE_MISC || !defined __USE_XOPEN2K8 || defined __USE_XOPEN2K8XSI 108 /* Return the position of the first bit set in I, or 0 if none are set. 109 The least-significant bit is position 1, the most-significant 32. */ 110 extern int ffs (int __i) __THROW __attribute__ ((const)); 111 #endif 112 113 /* Compare S1 and S2, ignoring case. */ 114 extern int strcasecmp (__const char *__s1, __const char *__s2) 115 __THROW __attribute_pure__; 116 117 /* Compare no more than N chars of S1 and S2, ignoring case. */ 118 extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n) 119 __THROW __attribute_pure__; 120 121 #ifdef __USE_XOPEN2K8 122 /* The following functions are equivalent to the both above but they 123 take the locale they use for the collation as an extra argument. 124 This is not standardsized but something like will come. */ 125 # include <xlocale.h> 126 127 /* Again versions of a few functions which use the given locale instead 128 of the global one. */ 129 extern int strcasecmp_l (__const char *__s1, __const char *__s2, 130 __locale_t __loc) 131 __THROW __attribute_pure__ __nonnull ((1, 2, 3)); 132 133 extern int strncasecmp_l (__const char *__s1, __const char *__s2, 134 size_t __n, __locale_t __loc) 135 __THROW __attribute_pure__ __nonnull ((1, 2, 4)); 136 #endif 137 138 __END_DECLS 139 140 #endif /* string.h */ 141 142 #endif /* strings.h */ 143
