| /* Copyright (C) 1991-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _STRINGS_H |
| #define _STRINGS_H 1 |
| |
| /* We don't need and should not read this file if <string.h> was already |
| read. The one exception being that if __USE_BSD isn't defined, then |
| these aren't defined in string.h, so we need to define them here. */ |
| #if !defined _STRING_H || !defined __USE_BSD |
| |
| # include <features.h> |
| # define __need_size_t |
| # include <stddef.h> |
| |
| /* Provide correct C++ prototypes, and indicate this to the caller. This |
| requires a compatible C++ standard library. As a heuristic, we provide |
| these when the compiler indicates full conformance with C++98 or later, |
| and for older GCC versions that are known to provide a compatible |
| libstdc++. */ |
| # if defined __cplusplus && (__cplusplus >= 199711L || __GNUC_PREREQ (4, 4)) |
| # define __CORRECT_ISO_CPP_STRINGS_H_PROTO |
| # endif |
| |
| __BEGIN_DECLS |
| |
| # if defined __USE_MISC || !defined __USE_XOPEN2K8 |
| /* Compare N bytes of S1 and S2 (same as memcmp). */ |
| extern int bcmp (const void *__s1, const void *__s2, size_t __n) |
| __THROW __attribute_pure__; |
| |
| /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ |
| extern void bcopy (const void *__src, void *__dest, size_t __n) __THROW; |
| |
| /* Set N bytes of S to 0. */ |
| extern void bzero (void *__s, size_t __n) __THROW; |
| |
| /* Find the first occurrence of C in S (same as strchr). */ |
| # ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO |
| extern "C++" |
| { |
| extern char *index (char *__s, int __c) |
| __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); |
| extern const char *index (const char *__s, int __c) |
| __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); |
| |
| # if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO |
| __extern_always_inline char * |
| index (char *__s, int __c) __THROW |
| { |
| return __builtin_index (__s, __c); |
| } |
| |
| __extern_always_inline const char * |
| index (const char *__s, int __c) __THROW |
| { |
| return __builtin_index (__s, __c); |
| } |
| # endif |
| } |
| # else |
| extern char *index (const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| # endif |
| |
| /* Find the last occurrence of C in S (same as strrchr). */ |
| # ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO |
| extern "C++" |
| { |
| extern char *rindex (char *__s, int __c) |
| __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); |
| extern const char *rindex (const char *__s, int __c) |
| __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); |
| |
| # if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO |
| __extern_always_inline char * |
| rindex (char *__s, int __c) __THROW |
| { |
| return __builtin_rindex (__s, __c); |
| } |
| |
| __extern_always_inline const char * |
| rindex (const char *__s, int __c) __THROW |
| { |
| return __builtin_rindex (__s, __c); |
| } |
| # endif |
| } |
| # else |
| extern char *rindex (const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| # endif |
| # endif |
| |
| #if defined __USE_MISC || !defined __USE_XOPEN2K8 || defined __USE_XOPEN2K8XSI |
| /* Return the position of the first bit set in I, or 0 if none are set. |
| The least-significant bit is position 1, the most-significant 32. */ |
| extern int ffs (int __i) __THROW __attribute__ ((const)); |
| #endif |
| |
| /* Compare S1 and S2, ignoring case. */ |
| extern int strcasecmp (const char *__s1, const char *__s2) |
| __THROW __attribute_pure__; |
| |
| /* Compare no more than N chars of S1 and S2, ignoring case. */ |
| extern int strncasecmp (const char *__s1, const char *__s2, size_t __n) |
| __THROW __attribute_pure__; |
| |
| #ifdef __USE_XOPEN2K8 |
| /* The following functions are equivalent to the both above but they |
| take the locale they use for the collation as an extra argument. |
| This is not standardsized but something like will come. */ |
| # include <xlocale.h> |
| |
| /* Again versions of a few functions which use the given locale instead |
| of the global one. */ |
| extern int strcasecmp_l (const char *__s1, const char *__s2, __locale_t __loc) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 3)); |
| |
| extern int strncasecmp_l (const char *__s1, const char *__s2, |
| size_t __n, __locale_t __loc) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 4)); |
| #endif |
| |
| __END_DECLS |
| |
| #endif /* string.h */ |
| |
| #endif /* strings.h */ |