1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2014 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
14 using Eigen::Tensor;
15
16 template<int DataLayout>
test_simple_padding()17 static void test_simple_padding()
18 {
19 Tensor<float, 4, DataLayout> tensor(2,3,5,7);
20 tensor.setRandom();
21
22 array<std::pair<ptrdiff_t, ptrdiff_t>, 4> paddings;
23 paddings[0] = std::make_pair(0, 0);
24 paddings[1] = std::make_pair(2, 1);
25 paddings[2] = std::make_pair(3, 4);
26 paddings[3] = std::make_pair(0, 0);
27
28 Tensor<float, 4, DataLayout> padded;
29 padded = tensor.pad(paddings);
30
31 VERIFY_IS_EQUAL(padded.dimension(0), 2+0);
32 VERIFY_IS_EQUAL(padded.dimension(1), 3+3);
33 VERIFY_IS_EQUAL(padded.dimension(2), 5+7);
34 VERIFY_IS_EQUAL(padded.dimension(3), 7+0);
35
36 for (int i = 0; i < 2; ++i) {
37 for (int j = 0; j < 6; ++j) {
38 for (int k = 0; k < 12; ++k) {
39 for (int l = 0; l < 7; ++l) {
40 if (j >= 2 && j < 5 && k >= 3 && k < 8) {
41 VERIFY_IS_EQUAL(padded(i,j,k,l), tensor(i,j-2,k-3,l));
42 } else {
43 VERIFY_IS_EQUAL(padded(i,j,k,l), 0.0f);
44 }
45 }
46 }
47 }
48 }
49 }
50
51 template<int DataLayout>
test_padded_expr()52 static void test_padded_expr()
53 {
54 Tensor<float, 4, DataLayout> tensor(2,3,5,7);
55 tensor.setRandom();
56
57 array<std::pair<ptrdiff_t, ptrdiff_t>, 4> paddings;
58 paddings[0] = std::make_pair(0, 0);
59 paddings[1] = std::make_pair(2, 1);
60 paddings[2] = std::make_pair(3, 4);
61 paddings[3] = std::make_pair(0, 0);
62
63 Eigen::DSizes<ptrdiff_t, 2> reshape_dims;
64 reshape_dims[0] = 12;
65 reshape_dims[1] = 84;
66
67 Tensor<float, 2, DataLayout> result;
68 result = tensor.pad(paddings).reshape(reshape_dims);
69
70 for (int i = 0; i < 2; ++i) {
71 for (int j = 0; j < 6; ++j) {
72 for (int k = 0; k < 12; ++k) {
73 for (int l = 0; l < 7; ++l) {
74 const float result_value = DataLayout == ColMajor ?
75 result(i+2*j,k+12*l) : result(j+6*i,l+7*k);
76 if (j >= 2 && j < 5 && k >= 3 && k < 8) {
77 VERIFY_IS_EQUAL(result_value, tensor(i,j-2,k-3,l));
78 } else {
79 VERIFY_IS_EQUAL(result_value, 0.0f);
80 }
81 }
82 }
83 }
84 }
85 }
86
test_cxx11_tensor_padding()87 void test_cxx11_tensor_padding()
88 {
89 CALL_SUBTEST(test_simple_padding<ColMajor>());
90 CALL_SUBTEST(test_simple_padding<RowMajor>());
91 CALL_SUBTEST(test_padded_expr<ColMajor>());
92 CALL_SUBTEST(test_padded_expr<RowMajor>());
93 }
94