1 ///////////////////////////////////////////////////////////////////////////////
2 // Copyright 2013 John Maddock. Distributed under the Boost
3 // Software License, Version 1.0. (See accompanying file
4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 #ifndef BOOST_MP_UBLAS_HPP
7 #define BOOST_MP_UBLAS_HPP
9 namespace boost { namespace numeric { namespace ublas {
12 class sparse_vector_element;
14 template <class V, class Backend, multiprecision::expression_template_option ExpressionTemplates>
15 inline bool operator==(const sparse_vector_element<V>& a, const ::boost::multiprecision::number<Backend, ExpressionTemplates>& b)
17 typedef typename sparse_vector_element<V>::const_reference ref_type;
18 return static_cast<ref_type>(a) == b;
21 template <class X, class Y>
22 struct promote_traits;
24 template <class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1, class Backend2, boost::multiprecision::expression_template_option ExpressionTemplates2>
25 struct promote_traits<boost::multiprecision::number<Backend1, ExpressionTemplates1>, boost::multiprecision::number<Backend2, ExpressionTemplates2> >
27 typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
28 typedef boost::multiprecision::number<Backend2, ExpressionTemplates2> number2_t;
29 typedef typename mpl::if_c<
30 is_convertible<number1_t, number2_t>::value && !is_convertible<number2_t, number1_t>::value,
31 number2_t, number1_t>::type promote_type;
34 template <class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1, class Arithmetic>
35 struct promote_traits<boost::multiprecision::number<Backend1, ExpressionTemplates1>, Arithmetic>
37 typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> promote_type;
40 template <class Arithmetic, class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1>
41 struct promote_traits<Arithmetic, boost::multiprecision::number<Backend1, ExpressionTemplates1> >
43 typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> promote_type;
46 template <class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1, class tag, class Arg1, class Arg2, class Arg3, class Arg4>
47 struct promote_traits<boost::multiprecision::number<Backend1, ExpressionTemplates1>, boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> >
49 typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
50 typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression_type;
51 typedef typename expression_type::result_type number2_t;
52 typedef typename promote_traits<number1_t, number2_t>::promote_type promote_type;
55 template <class tag, class Arg1, class Arg2, class Arg3, class Arg4, class Backend1, boost::multiprecision::expression_template_option ExpressionTemplates1>
56 struct promote_traits<boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>, boost::multiprecision::number<Backend1, ExpressionTemplates1> >
58 typedef boost::multiprecision::number<Backend1, ExpressionTemplates1> number1_t;
59 typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression_type;
60 typedef typename expression_type::result_type number2_t;
61 typedef typename promote_traits<number1_t, number2_t>::promote_type promote_type;
64 template <class tag, class Arg1, class Arg2, class Arg3, class Arg4, class tagb, class Arg1b, class Arg2b, class Arg3b, class Arg4b>
65 struct promote_traits<boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>, boost::multiprecision::detail::expression<tagb, Arg1b, Arg2b, Arg3b, Arg4b> >
67 typedef boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4> expression1_t;
68 typedef typename expression1_t::result_type number1_t;
69 typedef boost::multiprecision::detail::expression<tagb, Arg1b, Arg2b, Arg3b, Arg4b> expression2_t;
70 typedef typename expression2_t::result_type number2_t;
73 }}} // namespace boost::numeric::ublas