libstdc++
cstring
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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
ISO C++ entities toplevel namespace is std.