1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2017 Viktor Csomor <[email protected]>
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 #include <utility>
14
15 using Eigen::Tensor;
16 using Eigen::RowMajor;
17
calc_indices(int i,int & x,int & y,int & z)18 static void calc_indices(int i, int& x, int& y, int& z)
19 {
20 x = i / 4;
21 y = (i % 4) / 2;
22 z = i % 2;
23 }
24
test_move()25 static void test_move()
26 {
27 int x;
28 int y;
29 int z;
30
31 Tensor<int,3> tensor1(2, 2, 2);
32 Tensor<int,3,RowMajor> tensor2(2, 2, 2);
33
34 for (int i = 0; i < 8; i++)
35 {
36 calc_indices(i, x, y, z);
37 tensor1(x,y,z) = i;
38 tensor2(x,y,z) = 2 * i;
39 }
40
41 // Invokes the move constructor.
42 Tensor<int,3> moved_tensor1 = std::move(tensor1);
43 Tensor<int,3,RowMajor> moved_tensor2 = std::move(tensor2);
44
45 VERIFY_IS_EQUAL(tensor1.size(), 0);
46 VERIFY_IS_EQUAL(tensor2.size(), 0);
47
48 for (int i = 0; i < 8; i++)
49 {
50 calc_indices(i, x, y, z);
51 VERIFY_IS_EQUAL(moved_tensor1(x,y,z), i);
52 VERIFY_IS_EQUAL(moved_tensor2(x,y,z), 2 * i);
53 }
54
55 Tensor<int,3> moved_tensor3(2,2,2);
56 Tensor<int,3,RowMajor> moved_tensor4(2,2,2);
57
58 moved_tensor3.setZero();
59 moved_tensor4.setZero();
60
61 // Invokes the move assignment operator.
62 moved_tensor3 = std::move(moved_tensor1);
63 moved_tensor4 = std::move(moved_tensor2);
64
65 for (int i = 0; i < 8; i++)
66 {
67 calc_indices(i, x, y, z);
68 VERIFY_IS_EQUAL(moved_tensor3(x,y,z), i);
69 VERIFY_IS_EQUAL(moved_tensor4(x,y,z), 2 * i);
70 }
71 }
72
EIGEN_DECLARE_TEST(cxx11_tensor_move)73 EIGEN_DECLARE_TEST(cxx11_tensor_move)
74 {
75 CALL_SUBTEST(test_move());
76 }
77