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 using Eigen::Tensor;
14 
15 
16 static void test_simple_assign()
17 {
18   Tensor<int, 3> random(2,3,7);
19   random.setRandom();
20 
21   TensorMap<Tensor<const int, 3> > constant(random.data(), 2, 3, 7);
22   Tensor<int, 3> result(2,3,7);
23   result = constant;
24 
25   for (int i = 0; i < 2; ++i) {
26     for (int j = 0; j < 3; ++j) {
27       for (int k = 0; k < 7; ++k) {
28         VERIFY_IS_EQUAL((result(i,j,k)), random(i,j,k));
29       }
30     }
31   }
32 }
33 
34 
35 static void test_assign_of_const_tensor()
36 {
37   Tensor<int, 3> random(2,3,7);
38   random.setRandom();
39 
40   TensorMap<Tensor<const int, 3> > constant1(random.data(), 2, 3, 7);
41   TensorMap<const Tensor<int, 3> > constant2(random.data(), 2, 3, 7);
42   const TensorMap<Tensor<int, 3> > constant3(random.data(), 2, 3, 7);
43 
44   Tensor<int, 2> result1 = constant1.chip(0, 2);
45   Tensor<int, 2> result2 = constant2.chip(0, 2);
46   Tensor<int, 2> result3 = constant3.chip(0, 2);
47 
48   for (int i = 0; i < 2; ++i) {
49     for (int j = 0; j < 3; ++j) {
50       VERIFY_IS_EQUAL((result1(i,j)), random(i,j,0));
51       VERIFY_IS_EQUAL((result2(i,j)), random(i,j,0));
52       VERIFY_IS_EQUAL((result3(i,j)), random(i,j,0));
53     }
54   }
55 }
56 
57 
58 void test_cxx11_tensor_const()
59 {
60   CALL_SUBTEST(test_simple_assign());
61   CALL_SUBTEST(test_assign_of_const_tensor());
62 }
63