libstdc++-v3/include/c_std/cstdlib

   1 // -*- C++ -*- forwarding header.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   4 // 2009, 2010  Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 /** @file include/cstdlib
  27  *  This is a Standard C++ Library file.  You should @c #include this file
  28  *  in your programs, rather than any of the @a *.h implementation files.
  29  *
  30  *  This is the C++ version of the Standard C Library header @c stdlib.h,
  31  *  and its contents are (mostly) the same as that header, but are all
  32  *  contained in the namespace @c std (except for names which are defined
  33  *  as macros in C).
  34  */
  35
  36 //
  37 // ISO C++ 14882: 20.4.6  C library
  38 //
  39
  40 #ifndef _GLIBCXX_CSTDLIB
  41 #define _GLIBCXX_CSTDLIB 1
  42
  43 #pragma GCC system_header
  44
  45 #include <bits/c++config.h>
  46
  47 #if !_GLIBCXX_HOSTED
  48 // The C standard does not require a freestanding implementation to
  49 // provide <stdlib.h>.  However, the C++ standard does still require
  50 // <cstdlib> -- but only the functionality mentioned in
  51 // [lib.support.start.term].
  52
  53 #define EXIT_SUCCESS 0
  54 #define EXIT_FAILURE 1
  55
  56 namespace std
  57 {
  58   extern "C" void abort(void) throw () _GLIBCXX_NORETURN;
  59   extern "C" int atexit(void (*)()) throw ();
  60   extern "C" void exit(int) throw () _GLIBCXX_NORETURN;
  61 } // namespace
  62
  63 #else
  64
  65 #include <stdlib.h>
  66
  67 // Get rid of those macros defined in <stdlib.h> in lieu of real functions.
  68 #undef abort
  69 #undef abs
  70 #undef atexit
  71 #undef atof
  72 #undef atoi
  73 #undef atol
  74 #undef bsearch
  75 #undef calloc
  76 #undef div
  77 #undef exit
  78 #undef free
  79 #undef getenv
  80 #undef labs
  81 #undef ldiv
  82 #undef malloc
  83 #undef mblen
  84 #undef mbstowcs
  85 #undef mbtowc
  86 #undef qsort
  87 #undef rand
  88 #undef realloc
  89 #undef srand
  90 #undef strtod
  91 #undef strtol
  92 #undef strtoul
  93 #undef system
  94 #undef wcstombs
  95 #undef wctomb
  96
  97 namespace std _GLIBCXX_VISIBILITY(default)
  98 {
  99 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 100
 101   using ::div_t;
 102   using ::ldiv_t;
 103
 104   using ::abort;
 105   using ::abs;
 106   using ::atexit;
 107   using ::atof;
 108   using ::atoi;
 109   using ::atol;
 110   using ::bsearch;
 111   using ::calloc;
 112   using ::div;
 113   using ::exit;
 114   using ::free;
 115   using ::getenv;
 116   using ::labs;
 117   using ::ldiv;
 118   using ::malloc;
 119 #ifdef _GLIBCXX_HAVE_MBSTATE_T
 120   using ::mblen;
 121   using ::mbstowcs;
 122   using ::mbtowc;
 123 #endif // _GLIBCXX_HAVE_MBSTATE_T
 124   using ::qsort;
 125   using ::rand;
 126   using ::realloc;
 127   using ::srand;
 128   using ::strtod;
 129   using ::strtol;
 130   using ::strtoul;
 131   using ::system;
 132 #ifdef _GLIBCXX_USE_WCHAR_T
 133   using ::wcstombs;
 134   using ::wctomb;
 135 #endif // _GLIBCXX_USE_WCHAR_T
 136
 137   inline long
 138   abs(long __i) { return labs(__i); }
 139
 140   inline ldiv_t
 141   div(long __i, long __j) { return ldiv(__i, __j); }
 142
 143 _GLIBCXX_END_NAMESPACE_VERSION
 144 } // namespace
 145
 146 #if _GLIBCXX_USE_C99
 147
 148 #undef _Exit
 149 #undef llabs
 150 #undef lldiv
 151 #undef atoll
 152 #undef strtoll
 153 #undef strtoull
 154 #undef strtof
 155 #undef strtold
 156
 157 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
 158 {
 159 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 160
 161 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 162   using ::lldiv_t;
 163 #endif
 164 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
 165   extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
 166 #endif
 167 #if !_GLIBCXX_USE_C99_DYNAMIC
 168   using ::_Exit;
 169 #endif
 170
 171   inline long long
 172   abs(long long __x) { return __x >= 0 ? __x : -__x; }
 173
 174 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 175   using ::llabs;
 176
 177   inline lldiv_t
 178   div(long long __n, long long __d)
 179   { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
 180
 181   using ::lldiv;
 182 #endif
 183
 184 #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 185   extern "C" long long int (atoll)(const char *) throw ();
 186   extern "C" long long int
 187     (strtoll)(const char * __restrict, char ** __restrict, int) throw ();
 188   extern "C" unsigned long long int
 189     (strtoull)(const char * __restrict, char ** __restrict, int) throw ();
 190 #endif
 191 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 192   using ::atoll;
 193   using ::strtoll;
 194   using ::strtoull;
 195 #endif
 196   using ::strtof;
 197   using ::strtold;
 198
 199 _GLIBCXX_END_NAMESPACE_VERSION
 200 } // namespace __gnu_cxx
 201
 202 namespace std
 203 {
 204 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 205   using ::__gnu_cxx::lldiv_t;
 206 #endif
 207   using ::__gnu_cxx::_Exit;
 208   using ::__gnu_cxx::abs;
 209 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 210   using ::__gnu_cxx::llabs;
 211   using ::__gnu_cxx::div;
 212   using ::__gnu_cxx::lldiv;
 213 #endif
 214   using ::__gnu_cxx::atoll;
 215   using ::__gnu_cxx::strtof;
 216   using ::__gnu_cxx::strtoll;
 217   using ::__gnu_cxx::strtoull;
 218   using ::__gnu_cxx::strtold;
 219 } // namespace std
 220
 221 #endif // _GLIBCXX_USE_C99
 222
 223 #endif // !_GLIBCXX_HOSTED
 224
 225 #endif