1// -*- C++ -*- forwarding header.
2
3// Copyright (C) 1997-2024 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#define __glibcxx_want_freestanding_cstring
42#include <bits/version.h>
43#include <string.h>
44
45#ifndef _GLIBCXX_CSTRING
46#define _GLIBCXX_CSTRING 1
47
48// Get rid of those macros defined in <string.h> in lieu of real functions.
49#undef memchr
50#undef memcmp
51#undef memcpy
52#undef memmove
53#undef memset
54#undef strcat
55#undef strchr
56#undef strcmp
57#undef strcoll
58#undef strcpy
59#undef strcspn
60#undef strerror
61#undef strlen
62#undef strncat
63#undef strncmp
64#undef strncpy
65#undef strpbrk
66#undef strrchr
67#undef strspn
68#undef strstr
69#undef strtok
70#undef strxfrm
71
72extern "C++"
73{
74namespace std _GLIBCXX_VISIBILITY(default)
75{
76_GLIBCXX_BEGIN_NAMESPACE_VERSION
77
78 using ::memchr;
79 using ::memcmp;
80 using ::memcpy;
81 using ::memmove;
82 using ::memset;
83 using ::strcat;
84 using ::strcmp;
85 using ::strcoll;
86 using ::strcpy;
87 using ::strcspn;
88 using ::strerror;
89 using ::strlen;
90 using ::strncat;
91 using ::strncmp;
92 using ::strncpy;
93 using ::strspn;
94#if _GLIBCXX_HOSTED || __cplusplus <= 202302L
95 using ::strtok;
96#endif
97 using ::strxfrm;
98 using ::strchr;
99 using ::strpbrk;
100 using ::strrchr;
101 using ::strstr;
102
103#ifndef __CORRECT_ISO_CPP_STRING_H_PROTO
104 inline void*
105 memchr(void* __s, int __c, size_t __n)
106 { return __builtin_memchr(__s, __c, __n); }
107
108 inline char*
109 strchr(char* __s, int __n)
110 { return __builtin_strchr(__s, __n); }
111
112 inline char*
113 strpbrk(char* __s1, const char* __s2)
114 { return __builtin_strpbrk(__s1, __s2); }
115
116 inline char*
117 strrchr(char* __s, int __n)
118 { return __builtin_strrchr(__s, __n); }
119
120 inline char*
121 strstr(char* __s1, const char* __s2)
122 { return __builtin_strstr(__s1, __s2); }
123#endif
124
125_GLIBCXX_END_NAMESPACE_VERSION
126} // namespace
127} // extern "C++"
128
129#endif
130