1// -*- C++ -*- forwarding header.
2
3// Copyright (C) 1997-2021 Free Software Foundation, Inc.
4//
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)
9// any later version.
10
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.
15
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.
19
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/>.
24
25/** @file cstring
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.
28 *
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
32 * as macros in C).
33 */
34
35//
36// ISO C++ 14882: 20.4.6 C library
37//
38
39#pragma GCC system_header
40
41#include <bits/c++config.h>
42#include <string.h>
43
44#ifndef _GLIBCXX_CSTRING
45#define _GLIBCXX_CSTRING 1
46
47// Get rid of those macros defined in <string.h> in lieu of real functions.
48#undef memchr
49#undef memcmp
50#undef memcpy
51#undef memmove
52#undef memset
53#undef strcat
54#undef strchr
55#undef strcmp
56#undef strcoll
57#undef strcpy
58#undef strcspn
59#undef strerror
60#undef strlen
61#undef strncat
62#undef strncmp
63#undef strncpy
64#undef strpbrk
65#undef strrchr
66#undef strspn
67#undef strstr
68#undef strtok
69#undef strxfrm
70
71extern "C++"
72{
73namespace std _GLIBCXX_VISIBILITY(default)
74{
75_GLIBCXX_BEGIN_NAMESPACE_VERSION
76
77 using ::memchr;
78 using ::memcmp;
79 using ::memcpy;
80 using ::memmove;
81 using ::memset;
82 using ::strcat;
83 using ::strcmp;
84 using ::strcoll;
85 using ::strcpy;
86 using ::strcspn;
87 using ::strerror;
88 using ::strlen;
89 using ::strncat;
90 using ::strncmp;
91 using ::strncpy;
92 using ::strspn;
93 using ::strtok;
94 using ::strxfrm;
95 using ::strchr;
96 using ::strpbrk;
97 using ::strrchr;
98 using ::strstr;
99
100#ifndef __CORRECT_ISO_CPP_STRING_H_PROTO
101 inline void*
102 memchr(void* __s, int __c, size_t __n)
103 { return __builtin_memchr(__s, __c, __n); }
104
105 inline char*
106 strchr(char* __s, int __n)
107 { return __builtin_strchr(__s, __n); }
108
109 inline char*
110 strpbrk(char* __s1, const char* __s2)
111 { return __builtin_strpbrk(__s1, __s2); }
112
113 inline char*
114 strrchr(char* __s, int __n)
115 { return __builtin_strrchr(__s, __n); }
116
117 inline char*
118 strstr(char* __s1, const char* __s2)
119 { return __builtin_strstr(__s1, __s2); }
120#endif
121
122_GLIBCXX_END_NAMESPACE_VERSION
123} // namespace
124} // extern "C++"
125
126#endif
127

source code of include/c++/11/cstring