You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
72 lines
2.5 KiB
72 lines
2.5 KiB
// (c) Copyright Fernando Luis Cacciola Carballal 2000-2004 |
|
// Use, modification, and distribution is subject to the Boost Software |
|
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
|
// http://www.boost.org/LICENSE_1_0.txt) |
|
|
|
// See library home page at http://www.boost.org/libs/numeric/conversion |
|
// |
|
// Contact the author at: fernando_cacciola@hotmail.com |
|
// |
|
#ifndef BOOST_NUMERIC_CONVERSION_DETAIL_INT_FLOAT_MIXTURE_FLC_12NOV2002_HPP |
|
#define BOOST_NUMERIC_CONVERSION_DETAIL_INT_FLOAT_MIXTURE_FLC_12NOV2002_HPP |
|
|
|
#include "boost/config.hpp" |
|
#include "boost/limits.hpp" |
|
|
|
#include "boost/numeric/conversion/int_float_mixture_enum.hpp" |
|
#include "boost/numeric/conversion/detail/meta.hpp" |
|
|
|
#include "boost/mpl/integral_c.hpp" |
|
|
|
namespace boost { namespace numeric { namespace convdetail |
|
{ |
|
// Integral Constants for 'IntFloatMixture' |
|
typedef mpl::integral_c<int_float_mixture_enum, integral_to_integral> int2int_c ; |
|
typedef mpl::integral_c<int_float_mixture_enum, integral_to_float> int2float_c ; |
|
typedef mpl::integral_c<int_float_mixture_enum, float_to_integral> float2int_c ; |
|
typedef mpl::integral_c<int_float_mixture_enum, float_to_float> float2float_c ; |
|
|
|
// Metafunction: |
|
// |
|
// get_int_float_mixture<T,S>::type |
|
// |
|
// Selects the appropriate Int-Float Mixture Integral Constant for the combination T,S. |
|
// |
|
template<class T,class S> |
|
struct get_int_float_mixture |
|
{ |
|
typedef mpl::bool_< ::std::numeric_limits<S>::is_integer > S_int ; |
|
typedef mpl::bool_< ::std::numeric_limits<T>::is_integer > T_int ; |
|
|
|
typedef typename |
|
for_both<S_int, T_int, int2int_c, int2float_c, float2int_c, float2float_c>::type |
|
type ; |
|
} ; |
|
|
|
// Metafunction: |
|
// |
|
// for_int_float_mixture<Mixture,int_int,int_float,float_int,float_float>::type |
|
// |
|
// {Mixture} is one of the Integral Constants for Mixture, declared above. |
|
// {int_int,int_float,float_int,float_float} are aribtrary types. (not metafunctions) |
|
// |
|
// According to the value of 'IntFloatMixture', selects the corresponding type. |
|
// |
|
template<class IntFloatMixture, class Int2Int, class Int2Float, class Float2Int, class Float2Float> |
|
struct for_int_float_mixture |
|
{ |
|
typedef typename |
|
ct_switch4<IntFloatMixture |
|
,int2int_c, int2float_c, float2int_c // default |
|
,Int2Int , Int2Float , Float2Int , Float2Float |
|
>::type |
|
type ; |
|
} ; |
|
|
|
} } } // namespace boost::numeric::convdetail |
|
|
|
#endif |
|
// |
|
/////////////////////////////////////////////////////////////////////////////////////////////// |
|
|
|
|
|
|