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
14using Eigen::Tensor;
15using Eigen::RowMajor;
16
17static 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
29static 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
42void test_cxx11_tensor_math()
43{
44  CALL_SUBTEST(test_tanh());
45  CALL_SUBTEST(test_sigmoid());
46}
47