libstdc++

cstdlib
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1 // -*- C++ -*- forwarding header.
2
3 // Copyright (C) 1997-2013 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 include/cstdlib
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 stdlib.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
43 #ifndef _GLIBCXX_CSTDLIB
44 #define _GLIBCXX_CSTDLIB 1
45
46 #if !_GLIBCXX_HOSTED
47 // The C standard does not require a freestanding implementation to
48 // provide <stdlib.h>. However, the C++ standard does still require
49 // <cstdlib> -- but only the functionality mentioned in
50 // [lib.support.start.term].
51
52 #define EXIT_SUCCESS 0
53 #define EXIT_FAILURE 1
54
55 namespace std
56 {
57 extern "C" void abort(void) throw () _GLIBCXX_NORETURN;
58 extern "C" int atexit(void (*)()) throw ();
59 extern "C" void exit(int) throw () _GLIBCXX_NORETURN;
60 #if __cplusplus >= 201103L
61 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
62 extern "C" int at_quick_exit(void (*)()) throw ();
63 # endif
64 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
65 extern "C" void quick_exit(int) throw() _GLIBCXX_NORETURN;
66 # endif
67 #endif
68 } // namespace std
69
70 #else
71
72 #include <stdlib.h>
73
74 // Get rid of those macros defined in <stdlib.h> in lieu of real functions.
75 #undef abort
76 #undef abs
77 #undef atexit
78 #if __cplusplus >= 201103L
79 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
80 # undef at_quick_exit
81 # endif
82 #endif
83 #undef atof
84 #undef atoi
85 #undef atol
86 #undef bsearch
87 #undef calloc
88 #undef div
89 #undef exit
90 #undef free
91 #undef getenv
92 #undef labs
93 #undef ldiv
94 #undef malloc
95 #undef mblen
96 #undef mbstowcs
97 #undef mbtowc
98 #undef qsort
99 #if __cplusplus >= 201103L
100 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
101 # undef quick_exit
102 # endif
103 #endif
104 #undef rand
105 #undef realloc
106 #undef srand
107 #undef strtod
108 #undef strtol
109 #undef strtoul
110 #undef system
111 #undef wcstombs
112 #undef wctomb
113
114 namespace std _GLIBCXX_VISIBILITY(default)
115 {
116 _GLIBCXX_BEGIN_NAMESPACE_VERSION
117
118 using ::div_t;
119 using ::ldiv_t;
120
121 using ::abort;
122 using ::abs;
123 using ::atexit;
124 #if __cplusplus >= 201103L
125 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
126 using ::at_quick_exit;
127 # endif
128 #endif
129 using ::atof;
130 using ::atoi;
131 using ::atol;
132 using ::bsearch;
133 using ::calloc;
134 using ::div;
135 using ::exit;
136 using ::free;
137 using ::getenv;
138 using ::labs;
139 using ::ldiv;
140 using ::malloc;
141 #ifdef _GLIBCXX_HAVE_MBSTATE_T
142 using ::mblen;
143 using ::mbstowcs;
144 using ::mbtowc;
145 #endif // _GLIBCXX_HAVE_MBSTATE_T
146 using ::qsort;
147 #if __cplusplus >= 201103L
148 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
149 using ::quick_exit;
150 # endif
151 #endif
152 using ::rand;
153 using ::realloc;
154 using ::srand;
155 using ::strtod;
156 using ::strtol;
157 using ::strtoul;
158 using ::system;
159 #ifdef _GLIBCXX_USE_WCHAR_T
160 using ::wcstombs;
161 using ::wctomb;
162 #endif // _GLIBCXX_USE_WCHAR_T
163
164 #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
165 inline long
166 abs(long __i) { return __builtin_labs(__i); }
167
168 inline ldiv_t
169 div(long __i, long __j) { return ldiv(__i, __j); }
170 #endif
171
172 #ifdef _GLIBCXX_USE_LONG_LONG
173 inline long long
174 abs(long long __x) { return __builtin_llabs (__x); }
175 #endif
176
177 #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
178 inline __int128
179 abs(__int128 __x) { return __x >= 0 ? __x : -__x; }
180 #endif
181
182 _GLIBCXX_END_NAMESPACE_VERSION
183 } // namespace
184
185 #if _GLIBCXX_USE_C99
186
187 #undef _Exit
188 #undef llabs
189 #undef lldiv
190 #undef atoll
191 #undef strtoll
192 #undef strtoull
193 #undef strtof
194 #undef strtold
195
196 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
197 {
198 _GLIBCXX_BEGIN_NAMESPACE_VERSION
199
200 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
201 using ::lldiv_t;
202 #endif
203 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
204 extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
205 #endif
206 #if !_GLIBCXX_USE_C99_DYNAMIC
207 using ::_Exit;
208 #endif
209
210 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
211 using ::llabs;
212
213 inline lldiv_t
214 div(long long __n, long long __d)
215 { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
216
217 using ::lldiv;
218 #endif
219
220 #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
221 extern "C" long long int (atoll)(const char *) throw ();
222 extern "C" long long int
223 (strtoll)(const char * __restrict, char ** __restrict, int) throw ();
224 extern "C" unsigned long long int
225 (strtoull)(const char * __restrict, char ** __restrict, int) throw ();
226 #endif
227 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
228 using ::atoll;
229 using ::strtoll;
230 using ::strtoull;
231 #endif
232 using ::strtof;
233 using ::strtold;
234
235 _GLIBCXX_END_NAMESPACE_VERSION
236 } // namespace __gnu_cxx
237
238 namespace std
239 {
240 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
241 using ::__gnu_cxx::lldiv_t;
242 #endif
243 using ::__gnu_cxx::_Exit;
244 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
245 using ::__gnu_cxx::llabs;
246 using ::__gnu_cxx::div;
247 using ::__gnu_cxx::lldiv;
248 #endif
249 using ::__gnu_cxx::atoll;
250 using ::__gnu_cxx::strtof;
251 using ::__gnu_cxx::strtoll;
252 using ::__gnu_cxx::strtoull;
253 using ::__gnu_cxx::strtold;
254 } // namespace std
255
256 #endif // _GLIBCXX_USE_C99
257
258 #endif // !_GLIBCXX_HOSTED
259
260 #endif