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 using Eigen::RowMajor;
16
test_0d()17 static void test_0d()
18 {
19 Tensor<int, 0> scalar1;
20 Tensor<int, 0, RowMajor> scalar2;
21
22 TensorMap<Tensor<const int, 0> > scalar3(scalar1.data());
23 TensorMap<Tensor<const int, 0, RowMajor> > scalar4(scalar2.data());
24
25 scalar1() = 7;
26 scalar2() = 13;
27
28 VERIFY_IS_EQUAL(scalar1.rank(), 0);
29 VERIFY_IS_EQUAL(scalar1.size(), 1);
30
31 VERIFY_IS_EQUAL(scalar3(), 7);
32 VERIFY_IS_EQUAL(scalar4(), 13);
33 }
34
test_1d()35 static void test_1d()
36 {
37 Tensor<int, 1> vec1(6);
38 Tensor<int, 1, RowMajor> vec2(6);
39
40 TensorMap<Tensor<const int, 1> > vec3(vec1.data(), 6);
41 TensorMap<Tensor<const int, 1, RowMajor> > vec4(vec2.data(), 6);
42
43 vec1(0) = 4; vec2(0) = 0;
44 vec1(1) = 8; vec2(1) = 1;
45 vec1(2) = 15; vec2(2) = 2;
46 vec1(3) = 16; vec2(3) = 3;
47 vec1(4) = 23; vec2(4) = 4;
48 vec1(5) = 42; vec2(5) = 5;
49
50 VERIFY_IS_EQUAL(vec1.rank(), 1);
51 VERIFY_IS_EQUAL(vec1.size(), 6);
52 VERIFY_IS_EQUAL(vec1.dimension(0), 6);
53
54 VERIFY_IS_EQUAL(vec3(0), 4);
55 VERIFY_IS_EQUAL(vec3(1), 8);
56 VERIFY_IS_EQUAL(vec3(2), 15);
57 VERIFY_IS_EQUAL(vec3(3), 16);
58 VERIFY_IS_EQUAL(vec3(4), 23);
59 VERIFY_IS_EQUAL(vec3(5), 42);
60
61 VERIFY_IS_EQUAL(vec4(0), 0);
62 VERIFY_IS_EQUAL(vec4(1), 1);
63 VERIFY_IS_EQUAL(vec4(2), 2);
64 VERIFY_IS_EQUAL(vec4(3), 3);
65 VERIFY_IS_EQUAL(vec4(4), 4);
66 VERIFY_IS_EQUAL(vec4(5), 5);
67 }
68
test_2d()69 static void test_2d()
70 {
71 Tensor<int, 2> mat1(2,3);
72 Tensor<int, 2, RowMajor> mat2(2,3);
73
74 mat1(0,0) = 0;
75 mat1(0,1) = 1;
76 mat1(0,2) = 2;
77 mat1(1,0) = 3;
78 mat1(1,1) = 4;
79 mat1(1,2) = 5;
80
81 mat2(0,0) = 0;
82 mat2(0,1) = 1;
83 mat2(0,2) = 2;
84 mat2(1,0) = 3;
85 mat2(1,1) = 4;
86 mat2(1,2) = 5;
87
88 TensorMap<Tensor<const int, 2> > mat3(mat1.data(), 2, 3);
89 TensorMap<Tensor<const int, 2, RowMajor> > mat4(mat2.data(), 2, 3);
90
91 VERIFY_IS_EQUAL(mat3.rank(), 2);
92 VERIFY_IS_EQUAL(mat3.size(), 6);
93 VERIFY_IS_EQUAL(mat3.dimension(0), 2);
94 VERIFY_IS_EQUAL(mat3.dimension(1), 3);
95
96 VERIFY_IS_EQUAL(mat4.rank(), 2);
97 VERIFY_IS_EQUAL(mat4.size(), 6);
98 VERIFY_IS_EQUAL(mat4.dimension(0), 2);
99 VERIFY_IS_EQUAL(mat4.dimension(1), 3);
100
101 VERIFY_IS_EQUAL(mat3(0,0), 0);
102 VERIFY_IS_EQUAL(mat3(0,1), 1);
103 VERIFY_IS_EQUAL(mat3(0,2), 2);
104 VERIFY_IS_EQUAL(mat3(1,0), 3);
105 VERIFY_IS_EQUAL(mat3(1,1), 4);
106 VERIFY_IS_EQUAL(mat3(1,2), 5);
107
108 VERIFY_IS_EQUAL(mat4(0,0), 0);
109 VERIFY_IS_EQUAL(mat4(0,1), 1);
110 VERIFY_IS_EQUAL(mat4(0,2), 2);
111 VERIFY_IS_EQUAL(mat4(1,0), 3);
112 VERIFY_IS_EQUAL(mat4(1,1), 4);
113 VERIFY_IS_EQUAL(mat4(1,2), 5);
114 }
115
test_3d()116 static void test_3d()
117 {
118 Tensor<int, 3> mat1(2,3,7);
119 Tensor<int, 3, RowMajor> mat2(2,3,7);
120
121 int val = 0;
122 for (int i = 0; i < 2; ++i) {
123 for (int j = 0; j < 3; ++j) {
124 for (int k = 0; k < 7; ++k) {
125 mat1(i,j,k) = val;
126 mat2(i,j,k) = val;
127 val++;
128 }
129 }
130 }
131
132 TensorMap<Tensor<const int, 3> > mat3(mat1.data(), 2, 3, 7);
133 TensorMap<Tensor<const int, 3, RowMajor> > mat4(mat2.data(), 2, 3, 7);
134
135 VERIFY_IS_EQUAL(mat3.rank(), 3);
136 VERIFY_IS_EQUAL(mat3.size(), 2*3*7);
137 VERIFY_IS_EQUAL(mat3.dimension(0), 2);
138 VERIFY_IS_EQUAL(mat3.dimension(1), 3);
139 VERIFY_IS_EQUAL(mat3.dimension(2), 7);
140
141 VERIFY_IS_EQUAL(mat4.rank(), 3);
142 VERIFY_IS_EQUAL(mat4.size(), 2*3*7);
143 VERIFY_IS_EQUAL(mat4.dimension(0), 2);
144 VERIFY_IS_EQUAL(mat4.dimension(1), 3);
145 VERIFY_IS_EQUAL(mat4.dimension(2), 7);
146
147 val = 0;
148 for (int i = 0; i < 2; ++i) {
149 for (int j = 0; j < 3; ++j) {
150 for (int k = 0; k < 7; ++k) {
151 VERIFY_IS_EQUAL(mat3(i,j,k), val);
152 VERIFY_IS_EQUAL(mat4(i,j,k), val);
153 val++;
154 }
155 }
156 }
157 }
158
159
test_from_tensor()160 static void test_from_tensor()
161 {
162 Tensor<int, 3> mat1(2,3,7);
163 Tensor<int, 3, RowMajor> mat2(2,3,7);
164
165 int val = 0;
166 for (int i = 0; i < 2; ++i) {
167 for (int j = 0; j < 3; ++j) {
168 for (int k = 0; k < 7; ++k) {
169 mat1(i,j,k) = val;
170 mat2(i,j,k) = val;
171 val++;
172 }
173 }
174 }
175
176 TensorMap<Tensor<int, 3> > mat3(mat1);
177 TensorMap<Tensor<int, 3, RowMajor> > mat4(mat2);
178
179 VERIFY_IS_EQUAL(mat3.rank(), 3);
180 VERIFY_IS_EQUAL(mat3.size(), 2*3*7);
181 VERIFY_IS_EQUAL(mat3.dimension(0), 2);
182 VERIFY_IS_EQUAL(mat3.dimension(1), 3);
183 VERIFY_IS_EQUAL(mat3.dimension(2), 7);
184
185 VERIFY_IS_EQUAL(mat4.rank(), 3);
186 VERIFY_IS_EQUAL(mat4.size(), 2*3*7);
187 VERIFY_IS_EQUAL(mat4.dimension(0), 2);
188 VERIFY_IS_EQUAL(mat4.dimension(1), 3);
189 VERIFY_IS_EQUAL(mat4.dimension(2), 7);
190
191 val = 0;
192 for (int i = 0; i < 2; ++i) {
193 for (int j = 0; j < 3; ++j) {
194 for (int k = 0; k < 7; ++k) {
195 VERIFY_IS_EQUAL(mat3(i,j,k), val);
196 VERIFY_IS_EQUAL(mat4(i,j,k), val);
197 val++;
198 }
199 }
200 }
201
202 TensorFixedSize<int, Sizes<2,3,7> > mat5;
203
204 val = 0;
205 for (int i = 0; i < 2; ++i) {
206 for (int j = 0; j < 3; ++j) {
207 for (int k = 0; k < 7; ++k) {
208 array<ptrdiff_t, 3> coords;
209 coords[0] = i;
210 coords[1] = j;
211 coords[2] = k;
212 mat5(coords) = val;
213 val++;
214 }
215 }
216 }
217
218 TensorMap<TensorFixedSize<int, Sizes<2,3,7> > > mat6(mat5);
219
220 VERIFY_IS_EQUAL(mat6.rank(), 3);
221 VERIFY_IS_EQUAL(mat6.size(), 2*3*7);
222 VERIFY_IS_EQUAL(mat6.dimension(0), 2);
223 VERIFY_IS_EQUAL(mat6.dimension(1), 3);
224 VERIFY_IS_EQUAL(mat6.dimension(2), 7);
225
226 val = 0;
227 for (int i = 0; i < 2; ++i) {
228 for (int j = 0; j < 3; ++j) {
229 for (int k = 0; k < 7; ++k) {
230 VERIFY_IS_EQUAL(mat6(i,j,k), val);
231 val++;
232 }
233 }
234 }
235 }
236
237
f(const TensorMap<Tensor<int,3>> & tensor)238 static int f(const TensorMap<Tensor<int, 3> >& tensor) {
239 // Size<0> empty;
240 EIGEN_STATIC_ASSERT((internal::array_size<Sizes<> >::value == 0), YOU_MADE_A_PROGRAMMING_MISTAKE);
241 EIGEN_STATIC_ASSERT((internal::array_size<DSizes<int, 0> >::value == 0), YOU_MADE_A_PROGRAMMING_MISTAKE);
242 Tensor<int, 0> result = tensor.sum();
243 return result();
244 }
245
test_casting()246 static void test_casting()
247 {
248 Tensor<int, 3> tensor(2,3,7);
249
250 int val = 0;
251 for (int i = 0; i < 2; ++i) {
252 for (int j = 0; j < 3; ++j) {
253 for (int k = 0; k < 7; ++k) {
254 tensor(i,j,k) = val;
255 val++;
256 }
257 }
258 }
259
260 TensorMap<Tensor<int, 3> > map(tensor);
261 int sum1 = f(map);
262 int sum2 = f(tensor);
263
264 VERIFY_IS_EQUAL(sum1, sum2);
265 VERIFY_IS_EQUAL(sum1, 861);
266 }
267
test_cxx11_tensor_map()268 void test_cxx11_tensor_map()
269 {
270 CALL_SUBTEST(test_0d());
271 CALL_SUBTEST(test_1d());
272 CALL_SUBTEST(test_2d());
273 CALL_SUBTEST(test_3d());
274
275 CALL_SUBTEST(test_from_tensor());
276 CALL_SUBTEST(test_casting());
277 }
278