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- // Copyright (c) 2018-2019 Cem Bassoy
- //
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //
- // The authors gratefully acknowledge the support of
- // Fraunhofer and Google in producing this work
- // which started as a Google Summer of Code project.
- //
- #include <boost/numeric/ublas/tensor/expression.hpp>
- #include <boost/numeric/ublas/tensor/tensor.hpp>
- #include <boost/test/unit_test.hpp>
- #include "utility.hpp"
- #include <functional>
- #include <complex>
- using test_types = zip<int,long,float,double,std::complex<float>>::with_t<boost::numeric::ublas::first_order, boost::numeric::ublas::last_order>;
- struct fixture
- {
- using extents_type = boost::numeric::ublas::shape;
- fixture()
- : extents {
- extents_type{}, // 0
- extents_type{1,1}, // 1
- extents_type{1,2}, // 2
- extents_type{2,1}, // 3
- extents_type{2,3}, // 4
- extents_type{2,3,1}, // 5
- extents_type{1,2,3}, // 6
- extents_type{1,1,2,3}, // 7
- extents_type{1,2,3,1,1}, // 8
- extents_type{4,2,3}, // 9
- extents_type{4,2,1,3}, // 10
- extents_type{4,2,1,3,1}, // 11
- extents_type{1,4,2,1,3,1} } // 12
- {
- }
- std::vector<extents_type> extents;
- };
- BOOST_FIXTURE_TEST_CASE_TEMPLATE( test_tensor_expression_access, value, test_types, fixture)
- {
- using namespace boost::numeric;
- using value_type = typename value::first_type;
- using layout_type = typename value::second_type;
- using tensor_type = ublas::tensor<value_type, layout_type>;
- using tensor_expression_type = typename tensor_type::super_type;
- for(auto const& e : extents) {
- auto v = value_type{};
- auto t = tensor_type(e);
- for(auto& tt: t){ tt = v; v+=value_type{1}; }
- const auto& tensor_expression_const = static_cast<tensor_expression_type const&>( t );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( tensor_expression_const()(i), t(i) );
- }
- }
- BOOST_FIXTURE_TEST_CASE_TEMPLATE( test_tensor_unary_expression, value, test_types, fixture)
- {
- using namespace boost::numeric;
- using value_type = typename value::first_type;
- using layout_type = typename value::second_type;
- using tensor_type = ublas::tensor<value_type, layout_type>;
- auto uplus1 = std::bind( std::plus<value_type>{}, std::placeholders::_1, value_type(1) );
- for(auto const& e : extents) {
- auto t = tensor_type(e);
- auto v = value_type{};
- for(auto& tt: t) { tt = v; v+=value_type{1}; }
- const auto uexpr = ublas::detail::make_unary_tensor_expression<tensor_type>( t, uplus1 );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( uexpr(i), uplus1(t(i)) );
- auto uexpr_uexpr = ublas::detail::make_unary_tensor_expression<tensor_type>( uexpr, uplus1 );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( uexpr_uexpr(i), uplus1(uplus1(t(i))) );
- const auto & uexpr_e = uexpr.e;
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(uexpr_e) >, tensor_type > ) );
- const auto & uexpr_uexpr_e_e = uexpr_uexpr.e.e;
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(uexpr_uexpr_e_e) >, tensor_type > ) );
- }
- }
- BOOST_FIXTURE_TEST_CASE_TEMPLATE( test_tensor_binary_expression, value, test_types, fixture)
- {
- using namespace boost::numeric;
- using value_type = typename value::first_type;
- using layout_type = typename value::second_type;
- using tensor_type = ublas::tensor<value_type, layout_type>;
- auto uplus1 = std::bind( std::plus<value_type>{}, std::placeholders::_1, value_type(1) );
- auto uplus2 = std::bind( std::plus<value_type>{}, std::placeholders::_1, value_type(2) );
- auto bplus = std::plus <value_type>{};
- auto bminus = std::minus<value_type>{};
- for(auto const& e : extents) {
- auto t = tensor_type(e);
- auto v = value_type{};
- for(auto& tt: t){ tt = v; v+=value_type{1}; }
- auto uexpr1 = ublas::detail::make_unary_tensor_expression<tensor_type>( t, uplus1 );
- auto uexpr2 = ublas::detail::make_unary_tensor_expression<tensor_type>( t, uplus2 );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(uexpr1.e) >, tensor_type > ) );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(uexpr2.e) >, tensor_type > ) );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( uexpr1(i), uplus1(t(i)) );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( uexpr2(i), uplus2(t(i)) );
- auto bexpr_uexpr = ublas::detail::make_binary_tensor_expression<tensor_type>( uexpr1, uexpr2, bplus );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_uexpr.el.e) >, tensor_type > ) );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_uexpr.er.e) >, tensor_type > ) );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( bexpr_uexpr(i), bplus(uexpr1(i),uexpr2(i)) );
- auto bexpr_bexpr_uexpr = ublas::detail::make_binary_tensor_expression<tensor_type>( bexpr_uexpr, t, bminus );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_bexpr_uexpr.el.el.e) >, tensor_type > ) );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_bexpr_uexpr.el.er.e) >, tensor_type > ) );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_bexpr_uexpr.er) >, tensor_type > ) );
- BOOST_CHECK( ( std::is_same_v< std::decay_t< decltype(bexpr_bexpr_uexpr.er) >, tensor_type > ) );
- for(auto i = 0ul; i < t.size(); ++i)
- BOOST_CHECK_EQUAL( bexpr_bexpr_uexpr(i), bminus(bexpr_uexpr(i),t(i)) );
- }
- }
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