
#ifndef BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
#define BOOST_MPL_AUX_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.

// $Id$
// $Date$
// $Revision$

#include <boost/mpl/numeric_cast.hpp>
#include <boost/mpl/apply_wrap.hpp>
#include <boost/mpl/aux_/config/forwarding.hpp>

namespace boost {
namespace mpl {
namespace aux {

template<
    typename F
    , typename Tag1
    , typename Tag2
    >
struct cast1st_impl
{
    template< typename N1, typename N2 > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
        : apply_wrap2<
          F
        , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
        , N2
        >
    {
#else
    {
        typedef typename apply_wrap2<
        F
        , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
        , N2
        >::type type;
#endif
    };
};

template<
    typename F
    , typename Tag1
    , typename Tag2
    >
struct cast2nd_impl
{
    template< typename N1, typename N2 > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
        : apply_wrap2<
          F
        , N1
        , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
        >
    {
#else
    {
        typedef typename apply_wrap2<
        F
        , N1
        , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
        >::type type;
#endif
    };
};

}
}
}

#endif // BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
