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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 | ||
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 |