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_patch()17 static void test_simple_patch()
18 {
19 Tensor<float, 4, DataLayout> tensor(2,3,5,7);
20 tensor.setRandom();
21 array<ptrdiff_t, 4> patch_dims;
22
23 patch_dims[0] = 1;
24 patch_dims[1] = 1;
25 patch_dims[2] = 1;
26 patch_dims[3] = 1;
27
28 Tensor<float, 5, DataLayout> no_patch;
29 no_patch = tensor.extract_patches(patch_dims);
30
31 if (DataLayout == ColMajor) {
32 VERIFY_IS_EQUAL(no_patch.dimension(0), 1);
33 VERIFY_IS_EQUAL(no_patch.dimension(1), 1);
34 VERIFY_IS_EQUAL(no_patch.dimension(2), 1);
35 VERIFY_IS_EQUAL(no_patch.dimension(3), 1);
36 VERIFY_IS_EQUAL(no_patch.dimension(4), tensor.size());
37 } else {
38 VERIFY_IS_EQUAL(no_patch.dimension(0), tensor.size());
39 VERIFY_IS_EQUAL(no_patch.dimension(1), 1);
40 VERIFY_IS_EQUAL(no_patch.dimension(2), 1);
41 VERIFY_IS_EQUAL(no_patch.dimension(3), 1);
42 VERIFY_IS_EQUAL(no_patch.dimension(4), 1);
43 }
44
45 for (int i = 0; i < tensor.size(); ++i) {
46 VERIFY_IS_EQUAL(tensor.data()[i], no_patch.data()[i]);
47 }
48
49 patch_dims[0] = 2;
50 patch_dims[1] = 3;
51 patch_dims[2] = 5;
52 patch_dims[3] = 7;
53 Tensor<float, 5, DataLayout> single_patch;
54 single_patch = tensor.extract_patches(patch_dims);
55
56 if (DataLayout == ColMajor) {
57 VERIFY_IS_EQUAL(single_patch.dimension(0), 2);
58 VERIFY_IS_EQUAL(single_patch.dimension(1), 3);
59 VERIFY_IS_EQUAL(single_patch.dimension(2), 5);
60 VERIFY_IS_EQUAL(single_patch.dimension(3), 7);
61 VERIFY_IS_EQUAL(single_patch.dimension(4), 1);
62 } else {
63 VERIFY_IS_EQUAL(single_patch.dimension(0), 1);
64 VERIFY_IS_EQUAL(single_patch.dimension(1), 2);
65 VERIFY_IS_EQUAL(single_patch.dimension(2), 3);
66 VERIFY_IS_EQUAL(single_patch.dimension(3), 5);
67 VERIFY_IS_EQUAL(single_patch.dimension(4), 7);
68 }
69
70 for (int i = 0; i < tensor.size(); ++i) {
71 VERIFY_IS_EQUAL(tensor.data()[i], single_patch.data()[i]);
72 }
73
74 patch_dims[0] = 1;
75 patch_dims[1] = 2;
76 patch_dims[2] = 2;
77 patch_dims[3] = 1;
78 Tensor<float, 5, DataLayout> twod_patch;
79 twod_patch = tensor.extract_patches(patch_dims);
80
81 if (DataLayout == ColMajor) {
82 VERIFY_IS_EQUAL(twod_patch.dimension(0), 1);
83 VERIFY_IS_EQUAL(twod_patch.dimension(1), 2);
84 VERIFY_IS_EQUAL(twod_patch.dimension(2), 2);
85 VERIFY_IS_EQUAL(twod_patch.dimension(3), 1);
86 VERIFY_IS_EQUAL(twod_patch.dimension(4), 2*2*4*7);
87 } else {
88 VERIFY_IS_EQUAL(twod_patch.dimension(0), 2*2*4*7);
89 VERIFY_IS_EQUAL(twod_patch.dimension(1), 1);
90 VERIFY_IS_EQUAL(twod_patch.dimension(2), 2);
91 VERIFY_IS_EQUAL(twod_patch.dimension(3), 2);
92 VERIFY_IS_EQUAL(twod_patch.dimension(4), 1);
93 }
94
95 for (int i = 0; i < 2; ++i) {
96 for (int j = 0; j < 2; ++j) {
97 for (int k = 0; k < 4; ++k) {
98 for (int l = 0; l < 7; ++l) {
99 int patch_loc;
100 if (DataLayout == ColMajor) {
101 patch_loc = i + 2 * (j + 2 * (k + 4 * l));
102 } else {
103 patch_loc = l + 7 * (k + 4 * (j + 2 * i));
104 }
105 for (int x = 0; x < 2; ++x) {
106 for (int y = 0; y < 2; ++y) {
107 if (DataLayout == ColMajor) {
108 VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l), twod_patch(0,x,y,0,patch_loc));
109 } else {
110 VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l), twod_patch(patch_loc,0,x,y,0));
111 }
112 }
113 }
114 }
115 }
116 }
117 }
118
119 patch_dims[0] = 1;
120 patch_dims[1] = 2;
121 patch_dims[2] = 3;
122 patch_dims[3] = 5;
123 Tensor<float, 5, DataLayout> threed_patch;
124 threed_patch = tensor.extract_patches(patch_dims);
125
126 if (DataLayout == ColMajor) {
127 VERIFY_IS_EQUAL(threed_patch.dimension(0), 1);
128 VERIFY_IS_EQUAL(threed_patch.dimension(1), 2);
129 VERIFY_IS_EQUAL(threed_patch.dimension(2), 3);
130 VERIFY_IS_EQUAL(threed_patch.dimension(3), 5);
131 VERIFY_IS_EQUAL(threed_patch.dimension(4), 2*2*3*3);
132 } else {
133 VERIFY_IS_EQUAL(threed_patch.dimension(0), 2*2*3*3);
134 VERIFY_IS_EQUAL(threed_patch.dimension(1), 1);
135 VERIFY_IS_EQUAL(threed_patch.dimension(2), 2);
136 VERIFY_IS_EQUAL(threed_patch.dimension(3), 3);
137 VERIFY_IS_EQUAL(threed_patch.dimension(4), 5);
138 }
139
140 for (int i = 0; i < 2; ++i) {
141 for (int j = 0; j < 2; ++j) {
142 for (int k = 0; k < 3; ++k) {
143 for (int l = 0; l < 3; ++l) {
144 int patch_loc;
145 if (DataLayout == ColMajor) {
146 patch_loc = i + 2 * (j + 2 * (k + 3 * l));
147 } else {
148 patch_loc = l + 3 * (k + 3 * (j + 2 * i));
149 }
150 for (int x = 0; x < 2; ++x) {
151 for (int y = 0; y < 3; ++y) {
152 for (int z = 0; z < 5; ++z) {
153 if (DataLayout == ColMajor) {
154 VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l+z), threed_patch(0,x,y,z,patch_loc));
155 } else {
156 VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l+z), threed_patch(patch_loc,0,x,y,z));
157 }
158 }
159 }
160 }
161 }
162 }
163 }
164 }
165 }
166
test_cxx11_tensor_patch()167 void test_cxx11_tensor_patch()
168 {
169 CALL_SUBTEST(test_simple_patch<ColMajor>());
170 CALL_SUBTEST(test_simple_patch<RowMajor>());
171 // CALL_SUBTEST(test_expr_shuffling());
172 }
173