mirror of
https://github.com/yuzu-emu/ext-boost.git
synced 2024-12-23 08:45:28 +00:00
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
// (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_UDT_BUILTIN_MIXTURE_FLC_12NOV2002_HPP
|
|
#define BOOST_NUMERIC_CONVERSION_DETAIL_UDT_BUILTIN_MIXTURE_FLC_12NOV2002_HPP
|
|
|
|
#include "boost/type_traits/is_arithmetic.hpp"
|
|
|
|
#include "boost/numeric/conversion/udt_builtin_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 'UdtMixture'
|
|
typedef mpl::integral_c<udt_builtin_mixture_enum, builtin_to_builtin> builtin2builtin_c ;
|
|
typedef mpl::integral_c<udt_builtin_mixture_enum, builtin_to_udt> builtin2udt_c ;
|
|
typedef mpl::integral_c<udt_builtin_mixture_enum, udt_to_builtin> udt2builtin_c ;
|
|
typedef mpl::integral_c<udt_builtin_mixture_enum, udt_to_udt> udt2udt_c ;
|
|
|
|
// Metafunction:
|
|
//
|
|
// for_udt_mixture<UdtMixture,BuiltIn2BuiltIn,BuiltIn2Udt,Udt2BuiltIn,Udt2Udt>::type
|
|
//
|
|
// {UdtMixture} is one of the Integral Constants for UdMixture, declared above.
|
|
// {BuiltIn2BuiltIn,BuiltIn2Udt,Udt2BuiltIn,Udt2Udt} are aribtrary types. (not metafunctions)
|
|
//
|
|
// According to the value of 'UdtMixture', selects the corresponding type.
|
|
//
|
|
template<class UdtMixture, class BuiltIn2BuiltIn, class BuiltIn2Udt, class Udt2BuiltIn, class Udt2Udt>
|
|
struct for_udt_builtin_mixture
|
|
{
|
|
typedef typename
|
|
ct_switch4<UdtMixture
|
|
, builtin2builtin_c, builtin2udt_c, udt2builtin_c // default
|
|
, BuiltIn2BuiltIn , BuiltIn2Udt , Udt2BuiltIn , Udt2Udt
|
|
>::type
|
|
type ;
|
|
} ;
|
|
|
|
// Metafunction:
|
|
//
|
|
// get_udt_mixture<T,S>::type
|
|
//
|
|
// Selects the appropriate UdtMixture Integral Constant for the combination T,S.
|
|
//
|
|
template<class T,class S>
|
|
struct get_udt_builtin_mixture
|
|
{
|
|
typedef is_arithmetic<S> S_builtin ;
|
|
typedef is_arithmetic<T> T_builtin ;
|
|
|
|
typedef typename
|
|
for_both<S_builtin, T_builtin, builtin2builtin_c, builtin2udt_c, udt2builtin_c, udt2udt_c>::type
|
|
type ;
|
|
} ;
|
|
|
|
} } } // namespace boost::numeric::convdetail
|
|
|
|
#endif
|
|
|
|
|