1 | // -*- C++ -*- forwarding header. |
2 | |
3 | // Copyright (C) 1997-2016 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 (*)(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 (*)(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 | // Need to ensure this finds the C library's <stdlib.h> not a libstdc++ |
73 | // wrapper that might already be installed later in the include search path. |
74 | #define |
75 | #include_next <stdlib.h> |
76 | #undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
77 | |
78 | // Get rid of those macros defined in <stdlib.h> in lieu of real functions. |
79 | #undef abort |
80 | #undef abs |
81 | #undef atexit |
82 | #if __cplusplus >= 201103L |
83 | # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT |
84 | # undef at_quick_exit |
85 | # endif |
86 | #endif |
87 | #undef atof |
88 | #undef atoi |
89 | #undef atol |
90 | #undef bsearch |
91 | #undef calloc |
92 | #undef div |
93 | #undef exit |
94 | #undef free |
95 | #undef getenv |
96 | #undef labs |
97 | #undef ldiv |
98 | #undef malloc |
99 | #undef mblen |
100 | #undef mbstowcs |
101 | #undef mbtowc |
102 | #undef qsort |
103 | #if __cplusplus >= 201103L |
104 | # ifdef _GLIBCXX_HAVE_QUICK_EXIT |
105 | # undef quick_exit |
106 | # endif |
107 | #endif |
108 | #undef rand |
109 | #undef realloc |
110 | #undef srand |
111 | #undef strtod |
112 | #undef strtol |
113 | #undef strtoul |
114 | #undef system |
115 | #undef wcstombs |
116 | #undef wctomb |
117 | |
118 | extern "C++" |
119 | { |
120 | namespace std _GLIBCXX_VISIBILITY(default) |
121 | { |
122 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
123 | |
124 | using ::div_t; |
125 | using ::ldiv_t; |
126 | |
127 | using ::abort; |
128 | using ::abs; |
129 | using ::atexit; |
130 | #if __cplusplus >= 201103L |
131 | # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT |
132 | using ::at_quick_exit; |
133 | # endif |
134 | #endif |
135 | using ::atof; |
136 | using ::atoi; |
137 | using ::atol; |
138 | using ::bsearch; |
139 | using ::calloc; |
140 | using ::div; |
141 | using ::exit; |
142 | using ::free; |
143 | using ::getenv; |
144 | using ::labs; |
145 | using ::ldiv; |
146 | using ::malloc; |
147 | #ifdef _GLIBCXX_HAVE_MBSTATE_T |
148 | using ::mblen; |
149 | using ::mbstowcs; |
150 | using ::mbtowc; |
151 | #endif // _GLIBCXX_HAVE_MBSTATE_T |
152 | using ::qsort; |
153 | #if __cplusplus >= 201103L |
154 | # ifdef _GLIBCXX_HAVE_QUICK_EXIT |
155 | using ::quick_exit; |
156 | # endif |
157 | #endif |
158 | using ::rand; |
159 | using ::realloc; |
160 | using ::srand; |
161 | using ::strtod; |
162 | using ::strtol; |
163 | using ::strtoul; |
164 | using ::system; |
165 | #ifdef _GLIBCXX_USE_WCHAR_T |
166 | using ::wcstombs; |
167 | using ::wctomb; |
168 | #endif // _GLIBCXX_USE_WCHAR_T |
169 | |
170 | #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO |
171 | inline long |
172 | abs(long __i) { return __builtin_labs(__i); } |
173 | |
174 | inline ldiv_t |
175 | div(long __i, long __j) { return ldiv(__i, __j); } |
176 | #endif |
177 | |
178 | #ifdef _GLIBCXX_USE_LONG_LONG |
179 | inline long long |
180 | abs(long long __x) { return __builtin_llabs (__x); } |
181 | #endif |
182 | |
183 | #if defined(__GLIBCXX_TYPE_INT_N_0) |
184 | inline __GLIBCXX_TYPE_INT_N_0 |
185 | abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; } |
186 | #endif |
187 | #if defined(__GLIBCXX_TYPE_INT_N_1) |
188 | inline __GLIBCXX_TYPE_INT_N_1 |
189 | abs(__GLIBCXX_TYPE_INT_N_1 __x) { return __x >= 0 ? __x : -__x; } |
190 | #endif |
191 | #if defined(__GLIBCXX_TYPE_INT_N_2) |
192 | inline __GLIBCXX_TYPE_INT_N_2 |
193 | abs(__GLIBCXX_TYPE_INT_N_2 __x) { return __x >= 0 ? __x : -__x; } |
194 | #endif |
195 | #if defined(__GLIBCXX_TYPE_INT_N_3) |
196 | inline __GLIBCXX_TYPE_INT_N_3 |
197 | abs(__GLIBCXX_TYPE_INT_N_3 __x) { return __x >= 0 ? __x : -__x; } |
198 | #endif |
199 | |
200 | |
201 | _GLIBCXX_END_NAMESPACE_VERSION |
202 | } // namespace |
203 | |
204 | #if _GLIBCXX_USE_C99_STDLIB |
205 | |
206 | #undef _Exit |
207 | #undef llabs |
208 | #undef lldiv |
209 | #undef atoll |
210 | #undef strtoll |
211 | #undef strtoull |
212 | #undef strtof |
213 | #undef strtold |
214 | |
215 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) |
216 | { |
217 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
218 | |
219 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
220 | using ::lldiv_t; |
221 | #endif |
222 | #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC |
223 | extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN; |
224 | #endif |
225 | #if !_GLIBCXX_USE_C99_DYNAMIC |
226 | using ::_Exit; |
227 | #endif |
228 | |
229 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
230 | using ::llabs; |
231 | |
232 | inline lldiv_t |
233 | div(long long __n, long long __d) |
234 | { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; } |
235 | |
236 | using ::lldiv; |
237 | #endif |
238 | |
239 | #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
240 | extern "C" long long int (atoll)(const char *) throw (); |
241 | extern "C" long long int |
242 | (strtoll)(const char * __restrict, char ** __restrict, int) throw (); |
243 | extern "C" unsigned long long int |
244 | (strtoull)(const char * __restrict, char ** __restrict, int) throw (); |
245 | #endif |
246 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
247 | using ::atoll; |
248 | using ::strtoll; |
249 | using ::strtoull; |
250 | #endif |
251 | using ::strtof; |
252 | using ::strtold; |
253 | |
254 | _GLIBCXX_END_NAMESPACE_VERSION |
255 | } // namespace __gnu_cxx |
256 | |
257 | namespace std |
258 | { |
259 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
260 | using ::__gnu_cxx::lldiv_t; |
261 | #endif |
262 | using ::__gnu_cxx::_Exit; |
263 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
264 | using ::__gnu_cxx::llabs; |
265 | using ::__gnu_cxx::div; |
266 | using ::__gnu_cxx::lldiv; |
267 | #endif |
268 | using ::__gnu_cxx::atoll; |
269 | using ::__gnu_cxx::strtof; |
270 | using ::__gnu_cxx::strtoll; |
271 | using ::__gnu_cxx::strtoull; |
272 | using ::__gnu_cxx::strtold; |
273 | } // namespace std |
274 | |
275 | #endif // _GLIBCXX_USE_C99_STDLIB |
276 | |
277 | } // extern "C++" |
278 | |
279 | #endif // !_GLIBCXX_HOSTED |
280 | |
281 | #endif |
282 | |