numeric/conversion/converter.hpp

0001 //  (c) Copyright Fernando Luis Cacciola Carballal 2000-2004
0002 //  Use, modification, and distribution is subject to the Boost Software
0003 //  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0004 //  http://www.boost.org/LICENSE_1_0.txt)
0005
0006 //  See library home page at http://www.boost.org/libs/numeric/conversion
0007 //
0008 // Contact the author at: fernando_cacciola@hotmail.com
0009 //
0010 #ifndef BOOST_NUMERIC_CONVERSION_CONVERTER_FLC_12NOV2002_HPP
0011 #define BOOST_NUMERIC_CONVERSION_CONVERTER_FLC_12NOV2002_HPP
0012
0013 #include "boost/numeric/conversion/conversion_traits.hpp"
0014 #include "boost/numeric/conversion/converter_policies.hpp"
0015
0016 #include "boost/numeric/conversion/detail/converter.hpp"
0017
0018 namespace boost { namespace numeric
0019 {
0020
0021 template<class T,
0022          class S,
0023          class Traits           = conversion_traits<T,S>,
0024          class OverflowHandler  = def_overflow_handler,
0025          class Float2IntRounder = Trunc< BOOST_DEDUCED_TYPENAME Traits::source_type>  ,
0026          class RawConverter     = raw_converter<Traits>,
0027          class UserRangeChecker = UseInternalRangeChecker
0028         >
0029 struct converter : convdetail::get_converter_impl<Traits,
0030                                                   OverflowHandler,
0031                                                   Float2IntRounder,
0032                                                   RawConverter,
0033                                                   UserRangeChecker
0034                                                  >::type
0035 {
0036   typedef Traits traits ;
0037
0038   typedef typename Traits::argument_type argument_type ;
0039   typedef typename Traits::result_type   result_type   ;
0040
0041   result_type operator() ( argument_type s ) const { return this->convert(s) ; }
0042 } ;
0043
0044
0045
0046 template<class S,
0047          class OverflowHandler  = def_overflow_handler,
0048          class Float2IntRounder = Trunc<S>  ,
0049          class UserRangeChecker = UseInternalRangeChecker
0050         >
0051 struct make_converter_from
0052 {
0053   template<class T,
0054            class Traits       = conversion_traits<T,S>,
0055            class RawConverter = raw_converter<Traits>
0056           >
0057   struct to
0058   {
0059     typedef converter<T,S,Traits,OverflowHandler,Float2IntRounder,RawConverter,UserRangeChecker> type ;
0060   } ;
0061
0062 } ;
0063
0064 } } // namespace boost::numeric
0065
0066 #endif
0067
0068