fenv.h

00001 // -*- C++ -*- compatibility header.
00002 
00003 // Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 3, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 /** @file fenv.h
00026  *  This is a Standard C++ Library header.
00027  */
00028 
00029 #ifndef _GLIBCXX_FENV_H
00030 #define _GLIBCXX_FENV_H 1
00031 
00032 #pragma GCC system_header
00033 
00034 #include <bits/c++config.h>
00035 #if _GLIBCXX_HAVE_FENV_H
00036 # include_next <fenv.h>
00037 #endif
00038 
00039 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00040 #  if defined(_GLIBCXX_INCLUDE_AS_TR1)
00041 #    error C++0x header cannot be included from TR1 header
00042 #  endif
00043 #  if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
00044 #    include <tr1_impl/cfenv>
00045 #  else
00046 #    define _GLIBCXX_INCLUDE_AS_CXX0X
00047 #    define _GLIBCXX_BEGIN_NAMESPACE_TR1
00048 #    define _GLIBCXX_END_NAMESPACE_TR1
00049 #    define _GLIBCXX_TR1
00050 #    include <tr1_impl/cfenv>
00051 #    undef _GLIBCXX_TR1
00052 #    undef _GLIBCXX_END_NAMESPACE_TR1
00053 #    undef _GLIBCXX_BEGIN_NAMESPACE_TR1
00054 #    undef _GLIBCXX_INCLUDE_AS_CXX0X
00055 #  endif
00056 #endif
00057 
00058 #endif // _GLIBCXX_FENV_H

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