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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "main.h"
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#include <Eigen/CXX11/Tensor>
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using Eigen::Tensor;
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static void test_simple_padding()
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{
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Tensor<float, 4> tensor(2,3,5,7);
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tensor.setRandom();
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array<std::pair<ptrdiff_t, ptrdiff_t>, 4> paddings;
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paddings[0] = std::make_pair(0, 0);
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paddings[1] = std::make_pair(2, 1);
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paddings[2] = std::make_pair(3, 4);
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paddings[3] = std::make_pair(0, 0);
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Tensor<float, 4> padded;
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padded = tensor.pad(paddings);
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VERIFY_IS_EQUAL(padded.dimension(0), 2+0);
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VERIFY_IS_EQUAL(padded.dimension(1), 3+3);
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VERIFY_IS_EQUAL(padded.dimension(2), 5+7);
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VERIFY_IS_EQUAL(padded.dimension(3), 7+0);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 6; ++j) {
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for (int k = 0; k < 12; ++k) {
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for (int l = 0; l < 7; ++l) {
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if (j >= 2 && j < 5 && k >= 3 && k < 8) {
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VERIFY_IS_EQUAL(padded(i,j,k,l), tensor(i,j-2,k-3,l));
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} else {
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VERIFY_IS_EQUAL(padded(i,j,k,l), 0.0f);
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}
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}
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}
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}
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}
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}
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static void test_padded_expr()
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{
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Tensor<float, 4> tensor(2,3,5,7);
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tensor.setRandom();
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array<std::pair<ptrdiff_t, ptrdiff_t>, 4> paddings;
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paddings[0] = std::make_pair(0, 0);
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paddings[1] = std::make_pair(2, 1);
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paddings[2] = std::make_pair(3, 4);
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paddings[3] = std::make_pair(0, 0);
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Eigen::DSizes<ptrdiff_t, 2> reshape_dims;
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reshape_dims[0] = 12;
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reshape_dims[1] = 84;
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Tensor<float, 2> result;
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result = tensor.pad(paddings).reshape(reshape_dims);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 6; ++j) {
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for (int k = 0; k < 12; ++k) {
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for (int l = 0; l < 7; ++l) {
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if (j >= 2 && j < 5 && k >= 3 && k < 8) {
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VERIFY_IS_EQUAL(result(i+2*j,k+12*l), tensor(i,j-2,k-3,l));
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} else {
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VERIFY_IS_EQUAL(result(i+2*j,k+12*l), 0.0f);
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}
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}
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}
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}
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}
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}
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void test_cxx11_tensor_padding()
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{
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CALL_SUBTEST(test_simple_padding());
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CALL_SUBTEST(test_padded_expr());
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}
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