libstdc++-v3/include/c_global/cstdlib

   1 // -*- C++ -*- forwarding header.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   4 // 2006, 2007, 2008, 2009
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // Under Section 7 of GPL version 3, you are granted additional
  19 // permissions described in the GCC Runtime Library Exception, version
  20 // 3.1, as published by the Free Software Foundation.
  21
  22 // You should have received a copy of the GNU General Public License and
  23 // a copy of the GCC Runtime Library Exception along with this program;
  24 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 // <http://www.gnu.org/licenses/>.
  26
  27 /** @file include/cstdlib
  28  *  This is a Standard C++ Library file.  You should @c \#include this file
  29  *  in your programs, rather than any of the "*.h" implementation files.
  30  *
  31  *  This is the C++ version of the Standard C Library header @c stdlib.h,
  32  *  and its contents are (mostly) the same as that header, but are all
  33  *  contained in the namespace @c std (except for names which are defined
  34  *  as macros in C).
  35  */
  36
  37 //
  38 // ISO C++ 14882: 20.4.6  C library
  39 //
  40
  41 #pragma GCC system_header
  42
  43 #include <bits/c++config.h>
  44 #include <cstddef>
  45
  46 #ifndef _GLIBCXX_CSTDLIB
  47 #define _GLIBCXX_CSTDLIB 1
  48
  49 #if !_GLIBCXX_HOSTED
  50 // The C standard does not require a freestanding implementation to
  51 // provide <stdlib.h>.  However, the C++ standard does still require
  52 // <cstdlib> -- but only the functionality mentioned in
  53 // [lib.support.start.term].
  54
  55 #define EXIT_SUCCESS 0
  56 #define EXIT_FAILURE 1
  57
  58 _GLIBCXX_BEGIN_NAMESPACE(std)
  59
  60   extern "C" void abort(void) throw () _GLIBC_NORETURN;
  61   extern "C" int atexit(void (*)()) throw ();
  62   extern "C" void exit(int) throw () _GLIBC_NORETURN;
  63
  64 _GLIBCXX_END_NAMESPACE
  65
  66 #else
  67
  68 #include <stdlib.h>
  69
  70 // Get rid of those macros defined in <stdlib.h> in lieu of real functions.
  71 #undef abort
  72 #undef abs
  73 #undef atexit
  74 #undef atof
  75 #undef atoi
  76 #undef atol
  77 #undef bsearch
  78 #undef calloc
  79 #undef div
  80 #undef exit
  81 #undef free
  82 #undef getenv
  83 #undef labs
  84 #undef ldiv
  85 #undef malloc
  86 #undef mblen
  87 #undef mbstowcs
  88 #undef mbtowc
  89 #undef qsort
  90 #undef rand
  91 #undef realloc
  92 #undef srand
  93 #undef strtod
  94 #undef strtol
  95 #undef strtoul
  96 #undef system
  97 #undef wcstombs
  98 #undef wctomb
  99
 100 _GLIBCXX_BEGIN_NAMESPACE(std)
 101
 102   using ::div_t;
 103   using ::ldiv_t;
 104
 105   using ::abort;
 106   using ::abs;
 107   using ::atexit;
 108   using ::atof;
 109   using ::atoi;
 110   using ::atol;
 111   using ::bsearch;
 112   using ::calloc;
 113   using ::div;
 114   using ::exit;
 115   using ::free;
 116   using ::getenv;
 117   using ::labs;
 118   using ::ldiv;
 119   using ::malloc;
 120 #ifdef _GLIBCXX_HAVE_MBSTATE_T
 121   using ::mblen;
 122   using ::mbstowcs;
 123   using ::mbtowc;
 124 #endif // _GLIBCXX_HAVE_MBSTATE_T
 125   using ::qsort;
 126   using ::rand;
 127   using ::realloc;
 128   using ::srand;
 129   using ::strtod;
 130   using ::strtol;
 131   using ::strtoul;
 132   using ::system;
 133 #ifdef _GLIBCXX_USE_WCHAR_T
 134   using ::wcstombs;
 135   using ::wctomb;
 136 #endif // _GLIBCXX_USE_WCHAR_T
 137
 138   inline long
 139   abs(long __i) { return labs(__i); }
 140
 141   inline ldiv_t
 142   div(long __i, long __j) { return ldiv(__i, __j); }
 143
 144 _GLIBCXX_END_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 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
 158
 159 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 160   using ::lldiv_t;
 161 #endif
 162 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
 163   extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
 164 #endif
 165 #if !_GLIBCXX_USE_C99_DYNAMIC
 166   using ::_Exit;
 167 #endif
 168
 169   inline long long
 170   abs(long long __x) { return __x >= 0 ? __x : -__x; }
 171
 172 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 173   using ::llabs;
 174
 175   inline lldiv_t
 176   div(long long __n, long long __d)
 177   { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
 178
 179   using ::lldiv;
 180 #endif
 181
 182 #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 183   extern "C" long long int (atoll)(const char *) throw ();
 184   extern "C" long long int
 185     (strtoll)(const char * restrict, char ** restrict, int) throw ();
 186   extern "C" unsigned long long int
 187     (strtoull)(const char * restrict, char ** restrict, int) throw ();
 188 #endif
 189 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 190   using ::atoll;
 191   using ::strtoll;
 192   using ::strtoull;
 193 #endif
 194   using ::strtof;
 195   using ::strtold;
 196
 197 _GLIBCXX_END_NAMESPACE
 198
 199 _GLIBCXX_BEGIN_NAMESPACE(std)
 200
 201 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 202   using ::__gnu_cxx::lldiv_t;
 203 #endif
 204   using ::__gnu_cxx::_Exit;
 205   using ::__gnu_cxx::abs;
 206 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
 207   using ::__gnu_cxx::llabs;
 208   using ::__gnu_cxx::div;
 209   using ::__gnu_cxx::lldiv;
 210 #endif
 211   using ::__gnu_cxx::atoll;
 212   using ::__gnu_cxx::strtof;
 213   using ::__gnu_cxx::strtoll;
 214   using ::__gnu_cxx::strtoull;
 215   using ::__gnu_cxx::strtold;
 216
 217 _GLIBCXX_END_NAMESPACE
 218
 219 #endif // _GLIBCXX_USE_C99
 220
 221 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 222 #  if defined(_GLIBCXX_INCLUDE_AS_TR1)
 223 #    error C++0x header cannot be included from TR1 header
 224 #  endif
 225 #  if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
 226 #    include <tr1_impl/cstdlib>
 227 #  else
 228 #    define _GLIBCXX_INCLUDE_AS_CXX0X
 229 #    define _GLIBCXX_BEGIN_NAMESPACE_TR1
 230 #    define _GLIBCXX_END_NAMESPACE_TR1
 231 #    define _GLIBCXX_TR1
 232 #    include <tr1_impl/cstdlib>
 233 #    undef _GLIBCXX_TR1
 234 #    undef _GLIBCXX_END_NAMESPACE_TR1
 235 #    undef _GLIBCXX_BEGIN_NAMESPACE_TR1
 236 #    undef _GLIBCXX_INCLUDE_AS_CXX0X
 237 #  endif
 238 #endif
 239
 240 #endif // !_GLIBCXX_HOSTED
 241
 242 #endif