src/thirdparty/boost_1_47_0/boost/mpl/aux_/numeric_cast_utils.hpp

   1
   2 #ifndef BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
   3 #define BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2003-2004
   6 //
   7 // Distributed under the Boost Software License, Version 1.0.
   8 // (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10 //
  11 // See http://www.boost.org/libs/mpl for documentation.
  12
  13 // $Id: numeric_cast_utils.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
  14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
  15 // $Revision: 49267 $
  16
  17 #include <boost/mpl/numeric_cast.hpp>
  18 #include <boost/mpl/apply_wrap.hpp>
  19 #include <boost/mpl/aux_/config/forwarding.hpp>
  20
  21 namespace boost { namespace mpl { namespace aux {
  22
  23 template<
  24       typename F
  25     , typename Tag1
  26     , typename Tag2
  27     >
  28 struct cast1st_impl
  29 {
  30     template< typename N1, typename N2 > struct apply
  31 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
  32         : apply_wrap2<
  33               F
  34             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
  35             , N2
  36             >
  37     {
  38 #else
  39     {
  40     typedef typename apply_wrap2<
  41               F
  42             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag1,Tag2>,N1 >::type
  43             , N2
  44             >::type type;
  45 #endif
  46     };
  47 };
  48
  49 template<
  50       typename F
  51     , typename Tag1
  52     , typename Tag2
  53     >
  54 struct cast2nd_impl
  55 {
  56     template< typename N1, typename N2 > struct apply
  57 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
  58         : apply_wrap2<
  59               F
  60             , N1
  61             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
  62             >
  63     {
  64 #else
  65     {
  66         typedef typename apply_wrap2<
  67               F
  68             , N1
  69             , typename apply_wrap1< BOOST_MPL_AUX_NUMERIC_CAST<Tag2,Tag1>,N2 >::type
  70             >::type type;
  71 #endif
  72     };
  73 };
  74
  75 }}}
  76
  77 #endif // BOOST_MPL_AUX_NUMERIC_CAST_HPP_INCLUDED