cstring source code [include/c++/7/cstring]

1	// -- C++ -- forwarding header.
2
3	// Copyright (C) 1997-2017 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
71	namespace std _GLIBCXX_VISIBILITY(default)
72	{
73	_GLIBCXX_BEGIN_NAMESPACE_VERSION
74
75	using ::memchr;
76	using ::memcmp;
77	using ::memcpy;
78	using ::memmove;
79	using ::memset;
80	using ::strcat;
81	using ::strcmp;
82	using ::strcoll;
83	using ::strcpy;
84	using ::strcspn;
85	using ::strerror;
86	using ::strlen;
87	using ::strncat;
88	using ::strncmp;
89	using ::strncpy;
90	using ::strspn;
91	using ::strtok;
92	using ::strxfrm;
93	using ::strchr;
94	using ::strpbrk;
95	using ::strrchr;
96	using ::strstr;
97
98	#ifndef __CORRECT_ISO_CPP_STRING_H_PROTO
99	inline void*
100	memchr(void* __s, int __c, size_t __n)
101	{ return __builtin_memchr(__s, __c, __n); }
102
103	inline char*
104	strchr(char* __s, int __n)
105	{ return __builtin_strchr(__s, __n); }
106
107	inline char*
108	strpbrk(char* __s1, const char* __s2)
109	{ return __builtin_strpbrk(__s1, __s2); }
110
111	inline char*
112	strrchr(char* __s, int __n)
113	{ return __builtin_strrchr(__s, __n); }
114
115	inline char*
116	strstr(char* __s1, const char* __s2)
117	{ return __builtin_strstr(__s1, __s2); }
118	#endif
119
120	_GLIBCXX_END_NAMESPACE_VERSION
121	} // namespace
122
123	#endif
124

Clang Project