numeric_cast.hpp

来自「CGAL is a collaborative effort of severa」· HPP 代码 · 共 42 行

#ifndef BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED
#define BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2003-2004
//
// Distributed under the Boost Software License, Version 1.0. 
// (See accompanying file LICENSE_1_0.txt or copy at 
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.

// $Source: /CVSROOT/CGAL/Packages/Boost/include/boost/mpl/numeric_cast.hpp,v $
// $Date: 2004/11/20 10:39:23 $
// $Revision: 1.1.1.1 $

#include <boost/mpl/aux_/config/msvc.hpp>
#include <boost/mpl/aux_/config/workaround.hpp>

// agurt 21/sep/04: portability macro for the sake of MSVC 6.x-7.0; 
// resolves conflicts with 'boost::numeric_cast' function template.
// use it in your own code _only_ if you care about compatibility with 
// these outdated compilers!
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
#   define BOOST_MPL_AUX_NUMERIC_CAST numeric_cast_
#else
#   define BOOST_MPL_AUX_NUMERIC_CAST numeric_cast
#endif

namespace boost { namespace mpl {

// no default implementation; the definition is needed to make MSVC happy

template< typename SourceTag, typename TargetTag > struct BOOST_MPL_AUX_NUMERIC_CAST
{
    template< typename N > struct apply;
};

}}

#endif // BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED