diff -r e1b950c65cb4 -r 837f303aceeb epoc32/include/stdapis/boost/numeric/conversion/detail/conversion_traits.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/epoc32/include/stdapis/boost/numeric/conversion/detail/conversion_traits.hpp Wed Mar 31 12:33:34 2010 +0100 @@ -0,0 +1,97 @@ +// © 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 + struct non_trivial_traits_impl + { + typedef typename get_int_float_mixture ::type int_float_mixture ; + typedef typename get_sign_mixture ::type sign_mixture ; + typedef typename get_udt_builtin_mixture ::type udt_builtin_mixture ; + + typedef typename get_is_subranged::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 const&>::type argument_type ; + + typedef typename mpl::if_::type supertype ; + typedef typename mpl::if_::type subtype ; + } ; + + //------------------------------------------------------------------- + // Implementation of the Conversion Traits for T == S + // + // This is a VISIBLE base class of the user-level conversion_traits<> class. + //------------------------------------------------------------------- + template + struct trivial_traits_impl + { + typedef typename get_int_float_mixture ::type int_float_mixture ; + typedef typename get_sign_mixture ::type sign_mixture ; + typedef typename get_udt_builtin_mixture::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 + struct get_conversion_traits + { + typedef typename remove_cv::type target_type ; + typedef typename remove_cv::type source_type ; + + typedef typename is_same::type is_trivial ; + + typedef trivial_traits_impl trivial_imp ; + typedef non_trivial_traits_impl non_trivial_imp ; + + typedef typename mpl::if_::type type ; + } ; + +} } } // namespace boost::numeric::convdetail + +#endif + +