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