| /* Copyright (C) 1991-2021 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 |
| <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef _STRINGS_H |
| #define _STRINGS_H 1 |
| |
| #include <features.h> |
| #define __need_size_t |
| #include <stddef.h> |
| |
| /* Tell the caller that we provide correct C++ prototypes. */ |
| #if defined __cplusplus && __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__ __nonnull ((1, 2)); |
| |
| /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ |
| extern void bcopy (const void *__src, void *__dest, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| |
| /* Set N bytes of S to 0. */ |
| extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1)); |
| |
| /* 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__ |
| __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__ |
| __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 |
| |
| /* The following two functions are non-standard but necessary for non-32 bit |
| platforms. */ |
| # ifdef __USE_MISC |
| extern int ffsl (long int __l) __THROW __attribute_const__; |
| __extension__ extern int ffsll (long long int __ll) |
| __THROW __attribute_const__; |
| # endif |
| |
| /* Compare S1 and S2, ignoring case. */ |
| extern int strcasecmp (const char *__s1, const char *__s2) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| /* 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__ __nonnull ((1, 2)); |
| |
| #ifdef __USE_XOPEN2K8 |
| /* POSIX.1-2008 extended locale interface (see locale.h). */ |
| # include <bits/types/locale_t.h> |
| |
| /* Compare S1 and S2, ignoring case, using collation rules from LOC. */ |
| extern int strcasecmp_l (const char *__s1, const char *__s2, locale_t __loc) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 3)); |
| |
| /* Compare no more than N chars of S1 and S2, ignoring case, using |
| collation rules from LOC. */ |
| 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 |
| |
| #if __GNUC_PREREQ (3,4) && __USE_FORTIFY_LEVEL > 0 \ |
| && defined __fortify_function |
| /* Functions with security checks. */ |
| # if defined __USE_MISC || !defined __USE_XOPEN2K8 |
| # include <bits/strings_fortified.h> |
| # endif |
| #endif |
| |
| #endif /* strings.h */ |