1 
2 // Copyright Aleksey Gurtovoy 2000-2004
3 // Copyright Jaap Suter 2003
4 //
5 // Distributed under the Boost Software License, Version 1.0.
6 // (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt)
8 //
9 
10 // *Preprocessed* version of the main "shift_left.hpp" header
11 // -- DO NOT modify by hand!
12 
13 namespace boost { namespace mpl {
14 
15 template<
16       typename Tag1
17     , typename Tag2
18     >
19 struct shift_left_impl
20     : if_c<
21           ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
22               > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
23             )
24 
25         , aux::cast2nd_impl< shift_left_impl< Tag1,Tag1 >,Tag1, Tag2 >
26         , aux::cast1st_impl< shift_left_impl< Tag2,Tag2 >,Tag1, Tag2 >
27         >::type
28 {
29 };
30 
31 /// for Digital Mars C++/compilers with no CTPS/TTP support
32 template<> struct shift_left_impl< na,na >
33 {
34     template< typename U1, typename U2 > struct apply
35     {
36         typedef apply type;
37         BOOST_STATIC_CONSTANT(int, value  = 0);
38     };
39 };
40 
41 template< typename Tag > struct shift_left_impl< na,Tag >
42 {
43     template< typename U1, typename U2 > struct apply
44     {
45         typedef apply type;
46         BOOST_STATIC_CONSTANT(int, value  = 0);
47     };
48 };
49 
50 template< typename Tag > struct shift_left_impl< Tag,na >
51 {
52     template< typename U1, typename U2 > struct apply
53     {
54         typedef apply type;
55         BOOST_STATIC_CONSTANT(int, value  = 0);
56     };
57 };
58 
59 template< typename T > struct shift_left_tag
60 {
61     typedef typename T::tag type;
62 };
63 
64 template<
65       typename BOOST_MPL_AUX_NA_PARAM(N1)
66     , typename BOOST_MPL_AUX_NA_PARAM(N2)
67     >
68 struct shift_left
69 
70     : shift_left_impl<
71           typename shift_left_tag<N1>::type
72         , typename shift_left_tag<N2>::type
73         >::template apply< N1,N2 >::type
74 {
75     BOOST_MPL_AUX_LAMBDA_SUPPORT(2, shift_left, (N1, N2))
76 
77 };
78 
79 BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_left)
80 
81 }}
82 
83 namespace boost { namespace mpl {
84 template<>
85 struct shift_left_impl< integral_c_tag,integral_c_tag >
86 {
87     template< typename N, typename S > struct apply
88 
89         : integral_c<
90               typename N::value_type
91             , ( BOOST_MPL_AUX_VALUE_WKND(N)::value
92                   << BOOST_MPL_AUX_VALUE_WKND(S)::value
93                 )
94             >
95     {
96     };
97 };
98 
99 }}
100