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      1 // <cfenv> -*- C++ -*-
      2 
      3 // Copyright (C) 2007-2014 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 #pragma GCC system_header
     33 
     34 #if __cplusplus < 201103L
     35 # include <bits/c++0x_warning.h>
     36 #else
     37 
     38 #include <bits/c++config.h>
     39 
     40 #if _GLIBCXX_HAVE_FENV_H
     41 # include <fenv.h>
     42 #endif
     43 
     44 #ifdef _GLIBCXX_USE_C99_FENV_TR1
     45 
     46 #undef feclearexcept
     47 #undef fegetexceptflag
     48 #undef feraiseexcept
     49 #undef fesetexceptflag
     50 #undef fetestexcept
     51 #undef fegetround
     52 #undef fesetround
     53 #undef fegetenv
     54 #undef feholdexcept
     55 #undef fesetenv
     56 #undef feupdateenv
     57 
     58 namespace std
     59 {
     60   // types
     61   using ::fenv_t;
     62   using ::fexcept_t;
     63 
     64   // functions
     65   using ::feclearexcept;
     66   using ::fegetexceptflag;
     67   using ::feraiseexcept;
     68   using ::fesetexceptflag;
     69   using ::fetestexcept;
     70 
     71   using ::fegetround;
     72   using ::fesetround;
     73 
     74   using ::fegetenv;
     75   using ::feholdexcept;
     76   using ::fesetenv;
     77   using ::feupdateenv;
     78 } // namespace std
     79 
     80 #endif // _GLIBCXX_USE_C99_FENV_TR1
     81 
     82 #endif // C++11
     83 
     84 #endif // _GLIBCXX_CFENV
     85