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// $Id$
14// $Date$
15// $Revision$
16
17#include <boost/mpl/numeric_cast.hpp>
18#include <boost/mpl/apply_wrap.hpp>
19#include <boost/mpl/aux_/config/forwarding.hpp>
20
21namespace boost { namespace mpl { namespace aux {
22
23template<
24 typename F
25 , typename Tag1
26 , typename Tag2
27 >
28struct 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
49template<
50 typename F
51 , typename Tag1
52 , typename Tag2
53 >
54struct 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
78

source code of include/boost/mpl/aux_/numeric_cast_utils.hpp