1 // -*- C++ -*- forwarding header.
3 // Copyright (C) 1997-2016 Free Software Foundation, Inc.
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)
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.
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.
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/>.
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.
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
36 // ISO C++ 14882: 20.4.6 C library
39 #pragma GCC system_header
41 #include <bits/c++config.h>
43 #ifndef _GLIBCXX_CSTDLIB
44 #define _GLIBCXX_CSTDLIB 1
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].
52 #define EXIT_SUCCESS 0
53 #define EXIT_FAILURE 1
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 ();
64 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
65 extern "C" void quick_exit(int) throw() _GLIBCXX_NORETURN;
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
78 // Get rid of those macros defined in <stdlib.h> in lieu of real functions.
82 #if __cplusplus >= 201103L
83 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
103 #if __cplusplus >= 201103L
104 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
120 namespace std _GLIBCXX_VISIBILITY(default)
122 _GLIBCXX_BEGIN_NAMESPACE_VERSION
130 #if __cplusplus >= 201103L
131 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
132 using ::at_quick_exit;
147 #ifdef _GLIBCXX_HAVE_MBSTATE_T
151 #endif // _GLIBCXX_HAVE_MBSTATE_T
153 #if __cplusplus >= 201103L
154 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
165 #ifdef _GLIBCXX_USE_WCHAR_T
168 #endif // _GLIBCXX_USE_WCHAR_T
170 #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
172 abs(long __i) { return __builtin_labs(__i); }
175 div(long __i, long __j) { return ldiv(__i, __j); }
178 #ifdef _GLIBCXX_USE_LONG_LONG
180 abs(long long __x) { return __builtin_llabs (__x); }
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; }
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; }
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; }
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; }
201 _GLIBCXX_END_NAMESPACE_VERSION
204 #if _GLIBCXX_USE_C99_STDLIB
215 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
217 _GLIBCXX_BEGIN_NAMESPACE_VERSION
219 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
222 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
223 extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
225 #if !_GLIBCXX_USE_C99_DYNAMIC
229 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
233 div(long long __n, long long __d)
234 { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
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 ();
246 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
254 _GLIBCXX_END_NAMESPACE_VERSION
255 } // namespace __gnu_cxx
259 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
260 using ::__gnu_cxx::lldiv_t;
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;
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;
275 #endif // _GLIBCXX_USE_C99_STDLIB
279 #endif // !_GLIBCXX_HOSTED