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 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 | #define NULL __null |
55 | |
56 | namespace std |
57 | { |
58 | extern "C" void abort(void) _GLIBCXX_NOTHROW _GLIBCXX_NORETURN; |
59 | extern "C" int atexit(void (*)(void)) _GLIBCXX_NOTHROW; |
60 | extern "C" void exit(int) _GLIBCXX_NOTHROW _GLIBCXX_NORETURN; |
61 | #if __cplusplus >= 201103L |
62 | # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT |
63 | extern "C" int at_quick_exit(void (*)(void)) _GLIBCXX_NOTHROW; |
64 | # endif |
65 | # ifdef _GLIBCXX_HAVE_QUICK_EXIT |
66 | extern "C" void quick_exit(int) _GLIBCXX_NOTHROW _GLIBCXX_NORETURN; |
67 | # endif |
68 | #if _GLIBCXX_USE_C99_STDLIB |
69 | extern "C" void _Exit(int) _GLIBCXX_NOTHROW _GLIBCXX_NORETURN; |
70 | #endif |
71 | #endif |
72 | } // namespace std |
73 | |
74 | #else |
75 | |
76 | // Need to ensure this finds the C library's <stdlib.h> not a libstdc++ |
77 | // wrapper that might already be installed later in the include search path. |
78 | #define |
79 | #include_next <stdlib.h> |
80 | #undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
81 | #include <bits/std_abs.h> |
82 | |
83 | // Get rid of those macros defined in <stdlib.h> in lieu of real functions. |
84 | #undef abort |
85 | #if __cplusplus >= 201703L && defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) |
86 | # undef aligned_alloc |
87 | #endif |
88 | #undef atexit |
89 | #if __cplusplus >= 201103L |
90 | # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT |
91 | # undef at_quick_exit |
92 | # endif |
93 | #endif |
94 | #undef atof |
95 | #undef atoi |
96 | #undef atol |
97 | #undef bsearch |
98 | #undef calloc |
99 | #undef div |
100 | #undef exit |
101 | #undef free |
102 | #undef getenv |
103 | #undef labs |
104 | #undef ldiv |
105 | #undef malloc |
106 | #undef mblen |
107 | #undef mbstowcs |
108 | #undef mbtowc |
109 | #undef qsort |
110 | #if __cplusplus >= 201103L |
111 | # ifdef _GLIBCXX_HAVE_QUICK_EXIT |
112 | # undef quick_exit |
113 | # endif |
114 | #endif |
115 | #undef rand |
116 | #undef realloc |
117 | #undef srand |
118 | #undef strtod |
119 | #undef strtol |
120 | #undef strtoul |
121 | #undef system |
122 | #undef wcstombs |
123 | #undef wctomb |
124 | |
125 | extern "C++" |
126 | { |
127 | namespace std _GLIBCXX_VISIBILITY(default) |
128 | { |
129 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
130 | |
131 | using ::div_t; |
132 | using ::ldiv_t; |
133 | |
134 | using ::abort; |
135 | #if __cplusplus >= 201703L && defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) |
136 | using ::aligned_alloc; |
137 | #endif |
138 | using ::atexit; |
139 | #if __cplusplus >= 201103L |
140 | # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT |
141 | using ::at_quick_exit; |
142 | # endif |
143 | #endif |
144 | using ::atof; |
145 | using ::atoi; |
146 | using ::atol; |
147 | using ::bsearch; |
148 | using ::calloc; |
149 | using ::div; |
150 | using ::exit; |
151 | using ::free; |
152 | using ::getenv; |
153 | using ::labs; |
154 | using ::ldiv; |
155 | using ::malloc; |
156 | #ifdef _GLIBCXX_HAVE_MBSTATE_T |
157 | using ::mblen; |
158 | using ::mbstowcs; |
159 | using ::mbtowc; |
160 | #endif // _GLIBCXX_HAVE_MBSTATE_T |
161 | using ::qsort; |
162 | #if __cplusplus >= 201103L |
163 | # ifdef _GLIBCXX_HAVE_QUICK_EXIT |
164 | using ::quick_exit; |
165 | # endif |
166 | #endif |
167 | using ::rand; |
168 | using ::realloc; |
169 | using ::srand; |
170 | using ::strtod; |
171 | using ::strtol; |
172 | using ::strtoul; |
173 | using ::system; |
174 | #ifdef _GLIBCXX_USE_WCHAR_T |
175 | using ::wcstombs; |
176 | using ::wctomb; |
177 | #endif // _GLIBCXX_USE_WCHAR_T |
178 | |
179 | #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO |
180 | inline ldiv_t |
181 | div(long __i, long __j) _GLIBCXX_NOTHROW { return ldiv(numer: __i, denom: __j); } |
182 | #endif |
183 | |
184 | |
185 | _GLIBCXX_END_NAMESPACE_VERSION |
186 | } // namespace |
187 | |
188 | #if _GLIBCXX_USE_C99_STDLIB |
189 | |
190 | #undef _Exit |
191 | #undef llabs |
192 | #undef lldiv |
193 | #undef atoll |
194 | #undef strtoll |
195 | #undef strtoull |
196 | #undef strtof |
197 | #undef strtold |
198 | |
199 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) |
200 | { |
201 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
202 | |
203 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
204 | using ::lldiv_t; |
205 | #endif |
206 | #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC |
207 | extern "C" void (_Exit)(int) _GLIBCXX_NOTHROW _GLIBCXX_NORETURN; |
208 | #endif |
209 | #if !_GLIBCXX_USE_C99_DYNAMIC |
210 | using ::_Exit; |
211 | #endif |
212 | |
213 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
214 | using ::llabs; |
215 | |
216 | inline lldiv_t |
217 | div(long long __n, long long __d) |
218 | { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; } |
219 | |
220 | using ::lldiv; |
221 | #endif |
222 | |
223 | #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
224 | extern "C" long long int (atoll)(const char *) _GLIBCXX_NOTHROW; |
225 | extern "C" long long int |
226 | (strtoll)(const char * __restrict, char ** __restrict, int) _GLIBCXX_NOTHROW; |
227 | extern "C" unsigned long long int |
228 | (strtoull)(const char * __restrict, char ** __restrict, int) _GLIBCXX_NOTHROW; |
229 | #endif |
230 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
231 | using ::atoll; |
232 | using ::strtoll; |
233 | using ::strtoull; |
234 | #endif |
235 | using ::strtof; |
236 | using ::strtold; |
237 | |
238 | _GLIBCXX_END_NAMESPACE_VERSION |
239 | } // namespace __gnu_cxx |
240 | |
241 | namespace std |
242 | { |
243 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
244 | using ::__gnu_cxx::lldiv_t; |
245 | #endif |
246 | using ::__gnu_cxx::_Exit; |
247 | #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC |
248 | using ::__gnu_cxx::llabs; |
249 | using ::__gnu_cxx::div; |
250 | using ::__gnu_cxx::lldiv; |
251 | #endif |
252 | using ::__gnu_cxx::atoll; |
253 | using ::__gnu_cxx::strtof; |
254 | using ::__gnu_cxx::strtoll; |
255 | using ::__gnu_cxx::strtoull; |
256 | using ::__gnu_cxx::strtold; |
257 | } // namespace std |
258 | |
259 | #else // ! _GLIBCXX_USE_C99_STDLIB |
260 | |
261 | // We also check for strtof and strtold separately from _GLIBCXX_USE_C99_STDLIB |
262 | |
263 | #if _GLIBCXX_HAVE_STRTOF |
264 | #undef strtof |
265 | namespace std { using ::strtof; } |
266 | #endif |
267 | |
268 | #if _GLIBCXX_HAVE_STRTOLD |
269 | #undef strtold |
270 | namespace std { using ::strtold; } |
271 | #endif |
272 | |
273 | #endif // _GLIBCXX_USE_C99_STDLIB |
274 | |
275 | } // extern "C++" |
276 | |
277 | #endif // !_GLIBCXX_HOSTED |
278 | |
279 | #endif |
280 | |