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
55namespace 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 _GLIBCXX_INCLUDE_NEXT_C_HEADERS
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
118extern "C++"
119{
120namespace 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
215namespace __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
257namespace 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