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143 lines
3.4 KiB
C++
143 lines
3.4 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/CXX11/Tensor>
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using Eigen::Tensor;
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using Eigen::RowMajor;
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static void test_1d()
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{
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Tensor<int, 1> vec1(6);
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Tensor<int, 1, RowMajor> vec2(6);
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TensorMap<Tensor<const int, 1>> vec3(vec1.data(), 6);
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TensorMap<Tensor<const int, 1, RowMajor>> vec4(vec2.data(), 6);
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vec1(0) = 4; vec2(0) = 0;
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vec1(1) = 8; vec2(1) = 1;
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vec1(2) = 15; vec2(2) = 2;
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vec1(3) = 16; vec2(3) = 3;
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vec1(4) = 23; vec2(4) = 4;
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vec1(5) = 42; vec2(5) = 5;
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VERIFY_IS_EQUAL(vec1.size(), 6);
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VERIFY_IS_EQUAL(vec1.dimension(0), 6);
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VERIFY_IS_EQUAL(vec3(0), 4);
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VERIFY_IS_EQUAL(vec3(1), 8);
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VERIFY_IS_EQUAL(vec3(2), 15);
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VERIFY_IS_EQUAL(vec3(3), 16);
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VERIFY_IS_EQUAL(vec3(4), 23);
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VERIFY_IS_EQUAL(vec3(5), 42);
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VERIFY_IS_EQUAL(vec4(0), 0);
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VERIFY_IS_EQUAL(vec4(1), 1);
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VERIFY_IS_EQUAL(vec4(2), 2);
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VERIFY_IS_EQUAL(vec4(3), 3);
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VERIFY_IS_EQUAL(vec4(4), 4);
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VERIFY_IS_EQUAL(vec4(5), 5);
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}
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static void test_2d()
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{
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Tensor<int, 2> mat1(2,3);
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Tensor<int, 2, RowMajor> mat2(2,3);
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mat1(0,0) = 0;
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mat1(0,1) = 1;
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mat1(0,2) = 2;
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mat1(1,0) = 3;
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mat1(1,1) = 4;
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mat1(1,2) = 5;
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mat2(0,0) = 0;
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mat2(0,1) = 1;
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mat2(0,2) = 2;
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mat2(1,0) = 3;
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mat2(1,1) = 4;
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mat2(1,2) = 5;
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TensorMap<Tensor<const int, 2>> mat3(mat1.data(), 2, 3);
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TensorMap<Tensor<const int, 2, RowMajor>> mat4(mat2.data(), 2, 3);
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VERIFY_IS_EQUAL(mat3.size(), 6);
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VERIFY_IS_EQUAL(mat3.dimension(0), 2);
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VERIFY_IS_EQUAL(mat3.dimension(1), 3);
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VERIFY_IS_EQUAL(mat4.size(), 6);
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VERIFY_IS_EQUAL(mat4.dimension(0), 2);
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VERIFY_IS_EQUAL(mat4.dimension(1), 3);
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VERIFY_IS_EQUAL(mat3(0,0), 0);
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VERIFY_IS_EQUAL(mat3(0,1), 1);
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VERIFY_IS_EQUAL(mat3(0,2), 2);
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VERIFY_IS_EQUAL(mat3(1,0), 3);
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VERIFY_IS_EQUAL(mat3(1,1), 4);
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VERIFY_IS_EQUAL(mat3(1,2), 5);
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VERIFY_IS_EQUAL(mat4(0,0), 0);
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VERIFY_IS_EQUAL(mat4(0,1), 1);
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VERIFY_IS_EQUAL(mat4(0,2), 2);
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VERIFY_IS_EQUAL(mat4(1,0), 3);
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VERIFY_IS_EQUAL(mat4(1,1), 4);
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VERIFY_IS_EQUAL(mat4(1,2), 5);
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}
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static void test_3d()
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{
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Tensor<int, 3> mat1(2,3,7);
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Tensor<int, 3, RowMajor> mat2(2,3,7);
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int val = 0;
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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mat1(i,j,k) = val;
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mat2(i,j,k) = val;
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val++;
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}
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}
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}
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TensorMap<Tensor<const int, 3>> mat3(mat1.data(), 2, 3, 7);
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TensorMap<Tensor<const int, 3, RowMajor>> mat4(mat2.data(), 2, 3, 7);
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VERIFY_IS_EQUAL(mat3.size(), 2*3*7);
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VERIFY_IS_EQUAL(mat3.dimension(0), 2);
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VERIFY_IS_EQUAL(mat3.dimension(1), 3);
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VERIFY_IS_EQUAL(mat3.dimension(2), 7);
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VERIFY_IS_EQUAL(mat4.size(), 2*3*7);
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VERIFY_IS_EQUAL(mat4.dimension(0), 2);
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VERIFY_IS_EQUAL(mat4.dimension(1), 3);
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VERIFY_IS_EQUAL(mat4.dimension(2), 7);
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val = 0;
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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VERIFY_IS_EQUAL(mat3(i,j,k), val);
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VERIFY_IS_EQUAL(mat4(i,j,k), val);
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val++;
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}
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}
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}
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}
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void test_cxx11_tensor_map()
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{
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CALL_SUBTEST(test_1d());
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CALL_SUBTEST(test_2d());
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CALL_SUBTEST(test_3d());
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}
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