1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2015 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 using Eigen::Tensor;
15 using Eigen::RowMajor;
16 
test_tanh()17 static void test_tanh()
18 {
19   Tensor<float, 1> vec1(6);
20   vec1.setRandom();
21 
22   Tensor<float, 1> vec2 = vec1.tanh();
23 
24   for (int i = 0; i < 6; ++i) {
25     VERIFY_IS_APPROX(vec2(i), tanhf(vec1(i)));
26   }
27 }
28 
test_sigmoid()29 static void test_sigmoid()
30 {
31   Tensor<float, 1> vec1(6);
32   vec1.setRandom();
33 
34   Tensor<float, 1> vec2 = vec1.sigmoid();
35 
36   for (int i = 0; i < 6; ++i) {
37     VERIFY_IS_APPROX(vec2(i), 1.0f / (1.0f + std::exp(-vec1(i))));
38   }
39 }
40 
41 
test_cxx11_tensor_math()42 void test_cxx11_tensor_math()
43 {
44   CALL_SUBTEST(test_tanh());
45   CALL_SUBTEST(test_sigmoid());
46 }
47