Chris@16: 
Chris@16: #ifndef BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
Chris@16: #define BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2003-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/numeric_cast.hpp>
Chris@16: #include <boost/mpl/apply_wrap.hpp>
Chris@16: #include <boost/mpl/aux_/config/forwarding.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl { namespace aux {
Chris@16: 
Chris@16: template<
Chris@16:       typename F
Chris@16:     , typename Tag1
Chris@16:     , typename Tag2
Chris@16:     >
Chris@16: struct cast1st_impl
Chris@16: {
Chris@16:     template< typename N1, typename N2 > struct apply
Chris@16: #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
Chris@16:         : apply_wrap2< 
Chris@16:               F
Chris@16:             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
Chris@16:             , N2
Chris@16:             >
Chris@16:     {
Chris@16: #else
Chris@16:     {
Chris@16:     typedef typename apply_wrap2< 
Chris@16:               F
Chris@16:             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
Chris@16:             , N2
Chris@16:             >::type type;
Chris@16: #endif
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: template<
Chris@16:       typename F
Chris@16:     , typename Tag1
Chris@16:     , typename Tag2
Chris@16:     >
Chris@16: struct cast2nd_impl
Chris@16: {
Chris@16:     template< typename N1, typename N2 > struct apply
Chris@16: #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
Chris@16:         : apply_wrap2< 
Chris@16:               F
Chris@16:             , N1
Chris@16:             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
Chris@16:             >
Chris@16:     {
Chris@16: #else
Chris@16:     {
Chris@16:         typedef typename apply_wrap2< 
Chris@16:               F
Chris@16:             , N1
Chris@16:             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
Chris@16:             >::type type;
Chris@16: #endif
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: }}}
Chris@16: 
Chris@16: #endif // BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED