1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog (at) gmail.com> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #include "main.h" 11 12 #include <Eigen/CXX11/Tensor> 13 14 15 static void test_simple() 16 { 17 Tensor<float, 1, ColMajor> vec1(6); 18 Tensor<float, 1, ColMajor, int> vec2(6); 19 20 vec1(0) = 4.0; vec2(0) = 0.0; 21 vec1(1) = 8.0; vec2(1) = 1.0; 22 vec1(2) = 15.0; vec2(2) = 2.0; 23 vec1(3) = 16.0; vec2(3) = 3.0; 24 vec1(4) = 23.0; vec2(4) = 4.0; 25 vec1(5) = 42.0; vec2(5) = 5.0; 26 27 float data3[6]; 28 TensorMap<Tensor<float, 1, ColMajor>> vec3(data3, 6); 29 vec3 = vec1.sqrt(); 30 float data4[6]; 31 TensorMap<Tensor<float, 1, ColMajor, int>> vec4(data4, 6); 32 vec4 = vec2.square(); 33 34 VERIFY_IS_APPROX(vec3(0), sqrtf(4.0)); 35 VERIFY_IS_APPROX(vec3(1), sqrtf(8.0)); 36 VERIFY_IS_APPROX(vec3(2), sqrtf(15.0)); 37 VERIFY_IS_APPROX(vec3(3), sqrtf(16.0)); 38 VERIFY_IS_APPROX(vec3(4), sqrtf(23.0)); 39 VERIFY_IS_APPROX(vec3(5), sqrtf(42.0)); 40 41 VERIFY_IS_APPROX(vec4(0), 0.0f); 42 VERIFY_IS_APPROX(vec4(1), 1.0f); 43 VERIFY_IS_APPROX(vec4(2), 2.0f * 2.0f); 44 VERIFY_IS_APPROX(vec4(3), 3.0f * 3.0f); 45 VERIFY_IS_APPROX(vec4(4), 4.0f * 4.0f); 46 VERIFY_IS_APPROX(vec4(5), 5.0f * 5.0f); 47 } 48 49 50 void test_cxx11_tensor_mixed_indices() 51 { 52 CALL_SUBTEST(test_simple()); 53 } 54
