static_cast.hpp

C++的一个好库。。。现在很流行

#ifndef BOOST_MPL_AUX_STATIC_CAST_HPP_INCLUDED
#define BOOST_MPL_AUX_STATIC_CAST_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2001-2004
//
// 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/boost/boost/boost/mpl/aux_/static_cast.hpp,v $
// $Date: 2004/09/02 15:40:44 $
// $Revision: 1.3 $

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

#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x561)) \
 || BOOST_WORKAROUND(__GNUC__, < 3) \
 || BOOST_WORKAROUND(__MWERKS__, <= 0x3001)
#   define BOOST_MPL_AUX_STATIC_CAST(T, expr) (T)(expr)
#else
#   define BOOST_MPL_AUX_STATIC_CAST(T, expr) static_cast<T>(expr)
#endif

#endif // BOOST_MPL_AUX_STATIC_CAST_HPP_INCLUDED