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@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