1 // -*- C++ -*- forwarding header.
3 // Copyright (C) 1997-2025 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
26 * This is a Standard C++ Library file. You should @c \#include this file
27 * in your programs, rather than any of the @a *.h implementation files.
29 * This is the C++ version of the Standard C Library header @c string.h,
30 * and its contents are (mostly) the same as that header, but are all
31 * contained in the namespace @c std (except for names which are defined
36 // ISO C++ 14882: 20.4.6 C library
39 #ifndef _GLIBCXX_CSTRING
40 #define _GLIBCXX_CSTRING 1
42 #ifdef _GLIBCXX_SYSHDR
43 #pragma GCC system_header
46 #define __glibcxx_want_freestanding_cstring
47 #include <bits/version.h>
50 // Get rid of those macros defined in <string.h> in lieu of real functions.
76 namespace std _GLIBCXX_VISIBILITY(default)
78 _GLIBCXX_BEGIN_NAMESPACE_VERSION
96 #if _GLIBCXX_HOSTED || __cplusplus <= 202302L
105 #ifndef __CORRECT_ISO_CPP_STRING_H_PROTO
107 memchr(void* __s, int __c, size_t __n)
108 { return __builtin_memchr(__s, __c, __n); }
111 strchr(char* __s, int __n)
112 { return __builtin_strchr(__s, __n); }
115 strpbrk(char* __s1, const char* __s2)
116 { return __builtin_strpbrk(__s1, __s2); }
119 strrchr(char* __s, int __n)
120 { return __builtin_strrchr(__s, __n); }
123 strstr(char* __s1, const char* __s2)
124 { return __builtin_strstr(__s1, __s2); }
127 _GLIBCXX_END_NAMESPACE_VERSION