libstdc++-v3/include/c_global/cfenv

   1 // <cfenv> -*- C++ -*-
   2
   3 // Copyright (C) 2007-2024 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/cfenv
  26  *  This is a Standard C++ Library header.
  27  */
  28
  29 #ifndef _GLIBCXX_CFENV
  30 #define _GLIBCXX_CFENV 1
  31
  32 #ifdef _GLIBCXX_SYSHDR
  33 #pragma GCC system_header
  34 #endif
  35
  36 #if __cplusplus < 201103L
  37 # include <bits/c++0x_warning.h>
  38 #else
  39
  40 #include <bits/c++config.h>
  41
  42 #if _GLIBCXX_HAVE_FENV_H
  43 # include <fenv.h>
  44 #endif
  45
  46 #ifdef _GLIBCXX_USE_C99_FENV
  47
  48 #undef feclearexcept
  49 #undef fegetexceptflag
  50 #undef feraiseexcept
  51 #undef fesetexceptflag
  52 #undef fetestexcept
  53 #undef fegetround
  54 #undef fesetround
  55 #undef fegetenv
  56 #undef feholdexcept
  57 #undef fesetenv
  58 #undef feupdateenv
  59
  60 namespace std
  61 {
  62   // types
  63   using ::fenv_t;
  64   using ::fexcept_t;
  65
  66   // functions
  67   using ::feclearexcept;
  68   using ::fegetexceptflag;
  69   using ::feraiseexcept;
  70   using ::fesetexceptflag;
  71   using ::fetestexcept;
  72
  73   using ::fegetround;
  74   using ::fesetround;
  75
  76   using ::fegetenv;
  77   using ::feholdexcept;
  78   using ::fesetenv;
  79   using ::feupdateenv;
  80 } // namespace std
  81
  82 #endif // _GLIBCXX_USE_C99_FENV
  83
  84 #endif // C++11
  85
  86 #endif // _GLIBCXX_CFENV