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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp | |
| download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp b/3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp new file mode 100644 index 0000000..ed25349 --- /dev/null +++ b/3rdParty/Boost/boost/numeric/conversion/detail/conversion_traits.hpp @@ -0,0 +1,97 @@ +// (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_CONVERSION_TRAITS_FLC_12NOV2002_HPP +#define BOOST_NUMERIC_CONVERSION_DETAIL_CONVERSION_TRAITS_FLC_12NOV2002_HPP + +#include "boost/type_traits/is_arithmetic.hpp" +#include "boost/type_traits/is_same.hpp" +#include "boost/type_traits/remove_cv.hpp" + +#include "boost/numeric/conversion/detail/meta.hpp" +#include "boost/numeric/conversion/detail/int_float_mixture.hpp" +#include "boost/numeric/conversion/detail/sign_mixture.hpp" +#include "boost/numeric/conversion/detail/udt_builtin_mixture.hpp" +#include "boost/numeric/conversion/detail/is_subranged.hpp" + +namespace boost { namespace numeric { namespace convdetail +{ + //------------------------------------------------------------------- + // Implementation of the Conversion Traits for T != S + // + // This is a VISIBLE base class of the user-level conversion_traits<> class. + //------------------------------------------------------------------- + template<class T,class S> + struct non_trivial_traits_impl + { + typedef typename get_int_float_mixture <T,S>::type int_float_mixture ; + typedef typename get_sign_mixture <T,S>::type sign_mixture ; + typedef typename get_udt_builtin_mixture <T,S>::type udt_builtin_mixture ; + + typedef typename get_is_subranged<T,S>::type subranged ; + + typedef mpl::false_ trivial ; + + typedef T target_type ; + typedef S source_type ; + typedef T result_type ; + + typedef typename mpl::if_< is_arithmetic<S>, S, S const&>::type argument_type ; + + typedef typename mpl::if_<subranged,S,T>::type supertype ; + typedef typename mpl::if_<subranged,T,S>::type subtype ; + } ; + + //------------------------------------------------------------------- + // Implementation of the Conversion Traits for T == S + // + // This is a VISIBLE base class of the user-level conversion_traits<> class. + //------------------------------------------------------------------- + template<class N> + struct trivial_traits_impl + { + typedef typename get_int_float_mixture <N,N>::type int_float_mixture ; + typedef typename get_sign_mixture <N,N>::type sign_mixture ; + typedef typename get_udt_builtin_mixture<N,N>::type udt_builtin_mixture ; + + typedef mpl::false_ subranged ; + typedef mpl::true_ trivial ; + + typedef N target_type ; + typedef N source_type ; + typedef N const& result_type ; + typedef N const& argument_type ; + + typedef N supertype ; + typedef N subtype ; + + } ; + + //------------------------------------------------------------------- + // Top level implementation selector. + //------------------------------------------------------------------- + template<class T, class S> + struct get_conversion_traits + { + typedef typename remove_cv<T>::type target_type ; + typedef typename remove_cv<S>::type source_type ; + + typedef typename is_same<target_type,source_type>::type is_trivial ; + + typedef trivial_traits_impl <target_type> trivial_imp ; + typedef non_trivial_traits_impl<target_type,source_type> non_trivial_imp ; + + typedef typename mpl::if_<is_trivial,trivial_imp,non_trivial_imp>::type type ; + } ; + +} } } // namespace boost::numeric::convdetail + +#endif + + |