| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla |
| // Public License v. 2.0. If a copy of the MPL was not distributed |
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| #include "main.h" |
| |
| #include <Eigen/CXX11/Tensor> |
| |
| using Eigen::Tensor; |
| using Eigen::array; |
| |
| static void test_simple_cast() |
| { |
| Tensor<float, 2> ftensor(20,30); |
| ftensor = ftensor.random() * 100.f; |
| Tensor<char, 2> chartensor(20,30); |
| chartensor.setRandom(); |
| Tensor<std::complex<float>, 2> cplextensor(20,30); |
| cplextensor.setRandom(); |
| |
| chartensor = ftensor.cast<char>(); |
| cplextensor = ftensor.cast<std::complex<float> >(); |
| |
| for (int i = 0; i < 20; ++i) { |
| for (int j = 0; j < 30; ++j) { |
| VERIFY_IS_EQUAL(chartensor(i,j), static_cast<char>(ftensor(i,j))); |
| VERIFY_IS_EQUAL(cplextensor(i,j), static_cast<std::complex<float> >(ftensor(i,j))); |
| } |
| } |
| } |
| |
| |
| static void test_vectorized_cast() |
| { |
| Tensor<int, 2> itensor(20,30); |
| itensor = itensor.random() / 1000; |
| Tensor<float, 2> ftensor(20,30); |
| ftensor.setRandom(); |
| Tensor<double, 2> dtensor(20,30); |
| dtensor.setRandom(); |
| |
| ftensor = itensor.cast<float>(); |
| dtensor = itensor.cast<double>(); |
| |
| for (int i = 0; i < 20; ++i) { |
| for (int j = 0; j < 30; ++j) { |
| VERIFY_IS_EQUAL(itensor(i,j), static_cast<int>(ftensor(i,j))); |
| VERIFY_IS_EQUAL(dtensor(i,j), static_cast<double>(ftensor(i,j))); |
| } |
| } |
| } |
| |
| |
| static void test_float_to_int_cast() |
| { |
| Tensor<float, 2> ftensor(20,30); |
| ftensor = ftensor.random() * 1000.0f; |
| Tensor<double, 2> dtensor(20,30); |
| dtensor = dtensor.random() * 1000.0; |
| |
| Tensor<int, 2> i1tensor = ftensor.cast<int>(); |
| Tensor<int, 2> i2tensor = dtensor.cast<int>(); |
| |
| for (int i = 0; i < 20; ++i) { |
| for (int j = 0; j < 30; ++j) { |
| VERIFY_IS_EQUAL(i1tensor(i,j), static_cast<int>(ftensor(i,j))); |
| VERIFY_IS_EQUAL(i2tensor(i,j), static_cast<int>(dtensor(i,j))); |
| } |
| } |
| } |
| |
| |
| static void test_big_to_small_type_cast() |
| { |
| Tensor<double, 2> dtensor(20, 30); |
| dtensor.setRandom(); |
| Tensor<float, 2> ftensor(20, 30); |
| ftensor = dtensor.cast<float>(); |
| |
| for (int i = 0; i < 20; ++i) { |
| for (int j = 0; j < 30; ++j) { |
| VERIFY_IS_APPROX(dtensor(i,j), static_cast<double>(ftensor(i,j))); |
| } |
| } |
| } |
| |
| |
| static void test_small_to_big_type_cast() |
| { |
| Tensor<float, 2> ftensor(20, 30); |
| ftensor.setRandom(); |
| Tensor<double, 2> dtensor(20, 30); |
| dtensor = ftensor.cast<double>(); |
| |
| for (int i = 0; i < 20; ++i) { |
| for (int j = 0; j < 30; ++j) { |
| VERIFY_IS_APPROX(dtensor(i,j), static_cast<double>(ftensor(i,j))); |
| } |
| } |
| } |
| |
| |
| void test_cxx11_tensor_casts() |
| { |
| CALL_SUBTEST(test_simple_cast()); |
| CALL_SUBTEST(test_vectorized_cast()); |
| CALL_SUBTEST(test_float_to_int_cast()); |
| CALL_SUBTEST(test_big_to_small_type_cast()); |
| CALL_SUBTEST(test_small_to_big_type_cast()); |
| } |