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 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#include <bits/std_abs.h>
78
79// Get rid of those macros defined in <stdlib.h> in lieu of real functions.
80#undef abort
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 ::atexit;
129#if __cplusplus >= 201103L
130# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
131 using ::at_quick_exit;
132# endif
133#endif
134 using ::atof;
135 using ::atoi;
136 using ::atol;
137 using ::bsearch;
138 using ::calloc;
139 using ::div;
140 using ::exit;
141 using ::free;
142 using ::getenv;
143 using ::labs;
144 using ::ldiv;
145 using ::malloc;
146#ifdef _GLIBCXX_HAVE_MBSTATE_T
147 using ::mblen;
148 using ::mbstowcs;
149 using ::mbtowc;
150#endif // _GLIBCXX_HAVE_MBSTATE_T
151 using ::qsort;
152#if __cplusplus >= 201103L
153# ifdef _GLIBCXX_HAVE_QUICK_EXIT
154 using ::quick_exit;
155# endif
156#endif
157 using ::rand;
158 using ::realloc;
159 using ::srand;
160 using ::strtod;
161 using ::strtol;
162 using ::strtoul;
163 using ::system;
164#ifdef _GLIBCXX_USE_WCHAR_T
165 using ::wcstombs;
166 using ::wctomb;
167#endif // _GLIBCXX_USE_WCHAR_T
168
169#ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
170 inline ldiv_t
171 div(long __i, long __j) { return ldiv(__i, __j); }
172#endif
173
174
175_GLIBCXX_END_NAMESPACE_VERSION
176} // namespace
177
178#if _GLIBCXX_USE_C99_STDLIB
179
180#undef _Exit
181#undef llabs
182#undef lldiv
183#undef atoll
184#undef strtoll
185#undef strtoull
186#undef strtof
187#undef strtold
188
189namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
190{
191_GLIBCXX_BEGIN_NAMESPACE_VERSION
192
193#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
194 using ::lldiv_t;
195#endif
196#if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
197 extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
198#endif
199#if !_GLIBCXX_USE_C99_DYNAMIC
200 using ::_Exit;
201#endif
202
203#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
204 using ::llabs;
205
206 inline lldiv_t
207 div(long long __n, long long __d)
208 { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
209
210 using ::lldiv;
211#endif
212
213#if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
214 extern "C" long long int (atoll)(const char *) throw ();
215 extern "C" long long int
216 (strtoll)(const char * __restrict, char ** __restrict, int) throw ();
217 extern "C" unsigned long long int
218 (strtoull)(const char * __restrict, char ** __restrict, int) throw ();
219#endif
220#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
221 using ::atoll;
222 using ::strtoll;
223 using ::strtoull;
224#endif
225 using ::strtof;
226 using ::strtold;
227
228_GLIBCXX_END_NAMESPACE_VERSION
229} // namespace __gnu_cxx
230
231namespace std
232{
233#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
234 using ::__gnu_cxx::lldiv_t;
235#endif
236 using ::__gnu_cxx::_Exit;
237#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
238 using ::__gnu_cxx::llabs;
239 using ::__gnu_cxx::div;
240 using ::__gnu_cxx::lldiv;
241#endif
242 using ::__gnu_cxx::atoll;
243 using ::__gnu_cxx::strtof;
244 using ::__gnu_cxx::strtoll;
245 using ::__gnu_cxx::strtoull;
246 using ::__gnu_cxx::strtold;
247} // namespace std
248
249#endif // _GLIBCXX_USE_C99_STDLIB
250
251} // extern "C++"
252
253#endif // !_GLIBCXX_HOSTED
254
255#endif
256