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Added ability to swap the layout of a tensor

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Benoit Steiner
2015-01-14 10:14:46 -08:00
parent c94174b4fe
commit b00fe1590d
2 changed files with 259 additions and 0 deletions
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61
unsupported/test/cxx11_tensor_layout_swap.cpp Normal file
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// 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;
static void test_simple_swap()
{
Tensor<float, 3, ColMajor> tensor(2,3,7);
tensor.setRandom();
Tensor<float, 3, RowMajor> tensor2 = tensor.swap_layout();
VERIFY_IS_EQUAL(tensor.dimension(0), tensor2.dimension(2));
VERIFY_IS_EQUAL(tensor.dimension(1), tensor2.dimension(1));
VERIFY_IS_EQUAL(tensor.dimension(2), tensor2.dimension(0));
for (int i = 0; i < 2; ++i) {
for (int j = 0; j < 3; ++j) {
for (int k = 0; k < 7; ++k) {
VERIFY_IS_EQUAL(tensor(i,j,k), tensor2(k,j,i));
}
}
}
}
static void test_swap_as_lvalue()
{
Tensor<float, 3, ColMajor> tensor(2,3,7);
tensor.setRandom();
Tensor<float, 3, RowMajor> tensor2(7,3,2);
tensor2.swap_layout() = tensor;
VERIFY_IS_EQUAL(tensor.dimension(0), tensor2.dimension(2));
VERIFY_IS_EQUAL(tensor.dimension(1), tensor2.dimension(1));
VERIFY_IS_EQUAL(tensor.dimension(2), tensor2.dimension(0));
for (int i = 0; i < 2; ++i) {
for (int j = 0; j < 3; ++j) {
for (int k = 0; k < 7; ++k) {
VERIFY_IS_EQUAL(tensor(i,j,k), tensor2(k,j,i));
}
}
}
}
void test_cxx11_tensor_layout_swap()
{
CALL_SUBTEST(test_simple_swap());
CALL_SUBTEST(test_swap_as_lvalue());
}