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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "main.h"
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#include <Eigen/Core>
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#include <Eigen/CXX11/Tensor>
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using Eigen::MatrixXf;
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using Eigen::Tensor;
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static void test_simple()
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{
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MatrixXf m1(3,3);
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MatrixXf m2(3,3);
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m1.setRandom();
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m2.setRandom();
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TensorMap<Tensor<float, 2>> mat1(m1.data(), 3,3);
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TensorMap<Tensor<float, 2>> mat2(m2.data(), 3,3);
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Tensor<float, 2> mat3(3,3);
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mat3 = mat1;
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typedef Tensor<float, 1>::DimensionPair DimPair;
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Eigen::array<DimPair, 1> dims({{DimPair(1, 0)}});
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mat3 = mat3.contract(mat2, dims).eval();
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VERIFY_IS_APPROX(mat3(0, 0), (m1*m2).eval()(0,0));
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VERIFY_IS_APPROX(mat3(0, 1), (m1*m2).eval()(0,1));
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VERIFY_IS_APPROX(mat3(0, 2), (m1*m2).eval()(0,2));
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VERIFY_IS_APPROX(mat3(1, 0), (m1*m2).eval()(1,0));
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VERIFY_IS_APPROX(mat3(1, 1), (m1*m2).eval()(1,1));
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VERIFY_IS_APPROX(mat3(1, 2), (m1*m2).eval()(1,2));
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VERIFY_IS_APPROX(mat3(2, 0), (m1*m2).eval()(2,0));
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VERIFY_IS_APPROX(mat3(2, 1), (m1*m2).eval()(2,1));
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VERIFY_IS_APPROX(mat3(2, 2), (m1*m2).eval()(2,2));
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}
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void test_cxx11_tensor_forced_eval()
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{
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CALL_SUBTEST(test_simple());
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}
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