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].
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
120namespace 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
215namespace __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