mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-27 07:29:52 +08:00
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
// 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());
|
|
}
|