source: vendor/nemo/current/NEMOGCM/EXTERNAL/XIOS/extern/boost/include/boost/numeric/conversion/detail/int_float_mixture.hpp @ 44

Last change on this file since 44 was 44, checked in by cholod, 12 years ago

Load NEMO_TMP into vendor/nemo/current.

File size: 2.5 KB
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1//  (c) Copyright Fernando Luis Cacciola Carballal 2000-2004
2//  Use, modification, and distribution is subject to the Boost Software
3//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
4//  http://www.boost.org/LICENSE_1_0.txt)
5
6//  See library home page at http://www.boost.org/libs/numeric/conversion
7//
8// Contact the author at: fernando_cacciola@hotmail.com
9//
10#ifndef BOOST_NUMERIC_CONVERSION_DETAIL_INT_FLOAT_MIXTURE_FLC_12NOV2002_HPP
11#define BOOST_NUMERIC_CONVERSION_DETAIL_INT_FLOAT_MIXTURE_FLC_12NOV2002_HPP
12
13#include "boost/config.hpp"
14#include "boost/limits.hpp"
15
16#include "boost/numeric/conversion/int_float_mixture_enum.hpp"
17#include "boost/numeric/conversion/detail/meta.hpp"
18
19#include "boost/mpl/integral_c.hpp"
20
21namespace boost { namespace numeric { namespace convdetail
22{
23  // Integral Constants for 'IntFloatMixture'
24  typedef mpl::integral_c<int_float_mixture_enum, integral_to_integral> int2int_c ;
25  typedef mpl::integral_c<int_float_mixture_enum, integral_to_float>    int2float_c ;
26  typedef mpl::integral_c<int_float_mixture_enum, float_to_integral>    float2int_c ;
27  typedef mpl::integral_c<int_float_mixture_enum, float_to_float>       float2float_c ;
28
29  // Metafunction:
30  //
31  //   get_int_float_mixture<T,S>::type
32  //
33  // Selects the appropriate Int-Float Mixture Integral Constant for the combination T,S.
34  //
35  template<class T,class S>
36  struct get_int_float_mixture
37  {
38    typedef mpl::bool_< ::std::numeric_limits<S>::is_integer > S_int ;
39    typedef mpl::bool_< ::std::numeric_limits<T>::is_integer > T_int ;
40
41    typedef typename
42      for_both<S_int, T_int, int2int_c, int2float_c, float2int_c, float2float_c>::type
43        type ;
44  } ;
45
46  // Metafunction:
47  //
48  //   for_int_float_mixture<Mixture,int_int,int_float,float_int,float_float>::type
49  //
50  // {Mixture} is one of the Integral Constants for Mixture, declared above.
51  // {int_int,int_float,float_int,float_float} are aribtrary types. (not metafunctions)
52  //
53  // According to the value of 'IntFloatMixture', selects the corresponding type.
54  //
55  template<class IntFloatMixture, class Int2Int, class Int2Float, class Float2Int, class Float2Float>
56  struct for_int_float_mixture
57  {
58    typedef typename
59      ct_switch4<IntFloatMixture
60                 ,int2int_c, int2float_c, float2int_c  // default
61                 ,Int2Int  , Int2Float  , Float2Int  , Float2Float
62                >::type
63        type ;
64  } ;
65
66} } } // namespace boost::numeric::convdetail
67
68#endif
69//
70///////////////////////////////////////////////////////////////////////////////////////////////
71
72
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