1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <valarray>
10 
11 // template <class T> class mask_array
12 
13 // void mask_array& operator=(const mask_array& ma) const;
14 
15 #include <valarray>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 
20 int main(int, char**)
21 {
22     {
23     int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
24     const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
25     bool b1[N1] = {true,  false, false, true,  true,  false,
26                    false, true,  false, false, false, true};
27     int a2[] = {-1, -2, -3, -4, -5, -6, -7, -8};
28     const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
29     bool b2[N2] = {true,  false, true, true,
30                    false, false, true, true};
31     std::valarray<int> v1(a1, N1);
32     const std::valarray<int> v2(a2, N2);
33     std::valarray<bool> vb1(b1, N1);
34     std::valarray<bool> vb2(b2, N2);
35     v1[vb1] = v2[vb2];
36     assert(v1.size() == 16);
37     assert(v1[ 0] == -1);
38     assert(v1[ 1] ==  1);
39     assert(v1[ 2] ==  2);
40     assert(v1[ 3] == -3);
41     assert(v1[ 4] == -4);
42     assert(v1[ 5] ==  5);
43     assert(v1[ 6] ==  6);
44     assert(v1[ 7] == -7);
45     assert(v1[ 8] ==  8);
46     assert(v1[ 9] ==  9);
47     assert(v1[10] == 10);
48     assert(v1[11] == -8);
49     assert(v1[12] == 12);
50     assert(v1[13] == 13);
51     assert(v1[14] == 14);
52     assert(v1[15] == 15);
53     }
54     // Test return value of assignment
55     {
56     int a1[] = {0, 1, 2};
57     int a2[] = {3, 4, 5};
58     bool b1[] = {true, false, true};
59     std::valarray<int> v1(a1, 3);
60     std::valarray<int> v2(a2, 3);
61     std::valarray<bool> const vb1(b1, 3);
62     std::mask_array<int> m1 = v1[vb1];
63     std::mask_array<int> const m2 = v2[vb1];
64     std::mask_array<int> const & r = (m1 = m2);
65     assert(&r == &m1);
66     }
67 
68   return 0;
69 }
70