libstdc++-v3/include/c_compatibility/fenv.h

   1 // -*- C++ -*- compatibility header.
   2
   3 // Copyright (C) 2007-2013 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 fenv.h
  26  *  This is a Standard C++ Library header.
  27  */
  28
  29 #ifndef _GLIBCXX_FENV_H
  30 #define _GLIBCXX_FENV_H 1
  31
  32 #pragma GCC system_header
  33
  34 #include <bits/c++config.h>
  35 #if _GLIBCXX_HAVE_FENV_H
  36 # include_next <fenv.h>
  37 #endif
  38
  39 #if __cplusplus >= 201103L
  40
  41 #if _GLIBCXX_USE_C99_FENV_TR1
  42
  43 #undef feclearexcept
  44 #undef fegetexceptflag
  45 #undef feraiseexcept
  46 #undef fesetexceptflag
  47 #undef fetestexcept
  48 #undef fegetround
  49 #undef fesetround
  50 #undef fegetenv
  51 #undef feholdexcept
  52 #undef fesetenv
  53 #undef feupdateenv
  54
  55 namespace std
  56 {
  57   // types
  58   using ::fenv_t;
  59   using ::fexcept_t;
  60
  61   // functions
  62   using ::feclearexcept;
  63   using ::fegetexceptflag;
  64   using ::feraiseexcept;
  65   using ::fesetexceptflag;
  66   using ::fetestexcept;
  67
  68   using ::fegetround;
  69   using ::fesetround;
  70
  71   using ::fegetenv;
  72   using ::feholdexcept;
  73   using ::fesetenv;
  74   using ::feupdateenv;
  75 } // namespace
  76
  77 #endif // _GLIBCXX_USE_C99_FENV_TR1
  78
  79 #endif // C++11
  80
  81 #endif // _GLIBCXX_FENV_H