Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: //  Copyright 2013 John Maddock. Distributed under the Boost
Chris@16: //  Software License, Version 1.0. (See accompanying file
Chris@16: //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_MP_UBLAS_HPP
Chris@16: #define BOOST_MP_UBLAS_HPP
Chris@16: 
Chris@16: namespace boost { namespace numeric { namespace ublas {
Chris@16: 
Chris@16: template<class V>
Chris@16: class sparse_vector_element;
Chris@16: 
Chris@16: template <class V, class Backend, multiprecision::expression_template_option ExpressionTemplates>
Chris@16: inline bool operator == (const sparse_vector_element<V>& a, const ::boost::multiprecision::number<Backend, ExpressionTemplates>& b)
Chris@16: {
Chris@16:    typedef typename sparse_vector_element<V>::const_reference ref_type;
Chris@16:    return static_cast<ref_type>(a) == b;
Chris@16: }
Chris@16: 
Chris@16: template<class X, class Y>
Chris@16: struct promote_traits;
Chris@16: 
Chris@16: template <class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1, class Backend2, boost::multiprecision::expression_template_option ExpressionTemplates2>
Chris@16: struct promote_traits<boost::multiprecision::number<Backend1, ExpressionTemplates1>, boost::multiprecision::number<Backend2, ExpressionTemplates2> >
Chris@16: {
Chris@16:    typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
Chris@16:    typedef boost::multiprecision::number<Backend2, ExpressionTemplates2> number2_t;
Chris@16:    typedef typename mpl::if_c<
Chris@16:       is_convertible<number1_t, number2_t>::value && !is_convertible<number2_t, number1_t>::value,
Chris@16:       number2_t, number1_t
Chris@16:    >::type promote_type;
Chris@16: };
Chris@16: 
Chris@16: template <class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1, class tag, class Arg1, class Arg2, class Arg3, class Arg4>
Chris@16: struct promote_traits<boost::multiprecision::number<Backend1, ExpressionTemplates1>, boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> >
Chris@16: {
Chris@16:    typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
Chris@16:    typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression_type;
Chris@16:    typedef typename expression_type::result_type number2_t;
Chris@16:    typedef typename promote_traits<number1_t, number2_t>::promote_type promote_type;
Chris@16: };
Chris@16: 
Chris@16: template <class tag, class Arg1, class Arg2, class Arg3, class Arg4, class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1>
Chris@16: struct promote_traits<boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>, boost::multiprecision::number<Backend1, ExpressionTemplates1> >
Chris@16: {
Chris@16:    typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
Chris@16:    typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression_type;
Chris@16:    typedef typename expression_type::result_type number2_t;
Chris@16:    typedef typename promote_traits<number1_t, number2_t>::promote_type promote_type;
Chris@16: };
Chris@16: 
Chris@16: template <class tag, class Arg1, class Arg2, class Arg3, class Arg4, class tagb, class Arg1b, class Arg2b, class Arg3b, class Arg4b>
Chris@16: struct promote_traits<boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>, boost::multiprecision::detail::expression<tagb, Arg1b, Arg2b, Arg3b, Arg4b> >
Chris@16: {
Chris@16:    typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression1_t;
Chris@16:    typedef typename expression1_t::result_type number1_t;
Chris@16:    typedef boost::multiprecision::detail::expression<tagb, Arg1b, Arg2b, Arg3b, Arg4b> expression2_t;
Chris@16:    typedef typename expression2_t::result_type number2_t;
Chris@16: };
Chris@16: 
Chris@16: }}} // namespace
Chris@16: 
Chris@16: #endif
Chris@16: