1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/stdapis/boost/numeric/conversion/detail/conversion_traits.hpp	Wed Mar 31 12:33:34 2010 +0100
     1.3 @@ -0,0 +1,97 @@
     1.4 +//  © Copyright Fernando Luis Cacciola Carballal 2000-2004
     1.5 +//  Use, modification, and distribution is subject to the Boost Software
     1.6 +//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
     1.7 +//  http://www.boost.org/LICENSE_1_0.txt)
     1.8 +
     1.9 +//  See library home page at http://www.boost.org/libs/numeric/conversion
    1.10 +//
    1.11 +// Contact the author at: fernando_cacciola@hotmail.com
    1.12 +// 
    1.13 +#ifndef BOOST_NUMERIC_CONVERSION_DETAIL_CONVERSION_TRAITS_FLC_12NOV2002_HPP
    1.14 +#define BOOST_NUMERIC_CONVERSION_DETAIL_CONVERSION_TRAITS_FLC_12NOV2002_HPP
    1.15 +
    1.16 +#include "boost/type_traits/is_arithmetic.hpp"
    1.17 +#include "boost/type_traits/is_same.hpp"
    1.18 +#include "boost/type_traits/remove_cv.hpp"
    1.19 +
    1.20 +#include "boost/numeric/conversion/detail/meta.hpp"
    1.21 +#include "boost/numeric/conversion/detail/int_float_mixture.hpp"
    1.22 +#include "boost/numeric/conversion/detail/sign_mixture.hpp"
    1.23 +#include "boost/numeric/conversion/detail/udt_builtin_mixture.hpp"
    1.24 +#include "boost/numeric/conversion/detail/is_subranged.hpp"
    1.25 +
    1.26 +namespace boost { namespace numeric { namespace convdetail
    1.27 +{
    1.28 +  //-------------------------------------------------------------------
    1.29 +  // Implementation of the Conversion Traits for T != S
    1.30 +  //
    1.31 +  // This is a VISIBLE base class of the user-level conversion_traits<> class.
    1.32 +  //-------------------------------------------------------------------
    1.33 +  template<class T,class S>
    1.34 +  struct non_trivial_traits_impl
    1.35 +  {
    1.36 +    typedef typename get_int_float_mixture   <T,S>::type int_float_mixture ;
    1.37 +    typedef typename get_sign_mixture        <T,S>::type sign_mixture ;
    1.38 +    typedef typename get_udt_builtin_mixture <T,S>::type udt_builtin_mixture ;
    1.39 +
    1.40 +    typedef typename get_is_subranged<T,S>::type subranged ;
    1.41 +
    1.42 +    typedef mpl::false_ trivial ;
    1.43 +
    1.44 +    typedef T target_type ;
    1.45 +    typedef S source_type ;
    1.46 +    typedef T result_type ;
    1.47 +
    1.48 +    typedef typename mpl::if_< is_arithmetic<S>, S, S const&>::type argument_type ;
    1.49 +
    1.50 +    typedef typename mpl::if_<subranged,S,T>::type supertype ;
    1.51 +    typedef typename mpl::if_<subranged,T,S>::type subtype   ;
    1.52 +  } ;
    1.53 +
    1.54 +  //-------------------------------------------------------------------
    1.55 +  // Implementation of the Conversion Traits for T == S
    1.56 +  //
    1.57 +  // This is a VISIBLE base class of the user-level conversion_traits<> class.
    1.58 +  //-------------------------------------------------------------------
    1.59 +  template<class N>
    1.60 +  struct trivial_traits_impl
    1.61 +  {
    1.62 +    typedef typename get_int_float_mixture  <N,N>::type int_float_mixture ;
    1.63 +    typedef typename get_sign_mixture       <N,N>::type sign_mixture ;
    1.64 +    typedef typename get_udt_builtin_mixture<N,N>::type udt_builtin_mixture ;
    1.65 +
    1.66 +    typedef mpl::false_ subranged ;
    1.67 +    typedef mpl::true_  trivial ;
    1.68 +
    1.69 +    typedef N        target_type ;
    1.70 +    typedef N        source_type ;
    1.71 +    typedef N const& result_type ;
    1.72 +    typedef N const& argument_type ;
    1.73 +
    1.74 +    typedef N supertype ;
    1.75 +    typedef N subtype  ;
    1.76 +
    1.77 +  } ;
    1.78 +
    1.79 +  //-------------------------------------------------------------------
    1.80 +  // Top level implementation selector.
    1.81 +  //-------------------------------------------------------------------
    1.82 +  template<class T, class S>
    1.83 +  struct get_conversion_traits
    1.84 +  {
    1.85 +    typedef typename remove_cv<T>::type target_type ;
    1.86 +    typedef typename remove_cv<S>::type source_type ;
    1.87 +
    1.88 +    typedef typename is_same<target_type,source_type>::type is_trivial ;
    1.89 +
    1.90 +    typedef trivial_traits_impl    <target_type>             trivial_imp ;
    1.91 +    typedef non_trivial_traits_impl<target_type,source_type> non_trivial_imp ;
    1.92 +
    1.93 +    typedef typename mpl::if_<is_trivial,trivial_imp,non_trivial_imp>::type type ;
    1.94 +  } ;
    1.95 +
    1.96 +} } } // namespace boost::numeric::convdetail
    1.97 +
    1.98 +#endif
    1.99 +
   1.100 +