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 operator=(const valarray<value_type>& v) const;
14 
15 #include <valarray>
16 #include <cassert>
17 
18 int main()
19 {
20     int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
21     const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
22     int a2[] = {1, 2, 3, 4, 5};
23     const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
24     bool b[N1] = {true,  false, false, true,  true,  false,
25                   false, true,  false, false, false, true};
26     std::valarray<int> v1(a1, N1);
27     std::valarray<int> v2(a2, N2);
28     assert(N2 == std::count(b, b+N1, true));
29     std::valarray<bool> vb(b, N1);
30     v1[vb] = v2;
31     assert(v1.size() == 16);
32     assert(v1[ 0] ==  1);
33     assert(v1[ 1] ==  1);
34     assert(v1[ 2] ==  2);
35     assert(v1[ 3] ==  2);
36     assert(v1[ 4] ==  3);
37     assert(v1[ 5] ==  5);
38     assert(v1[ 6] ==  6);
39     assert(v1[ 7] ==  4);
40     assert(v1[ 8] ==  8);
41     assert(v1[ 9] ==  9);
42     assert(v1[10] == 10);
43     assert(v1[11] ==  5);
44     assert(v1[12] == 12);
45     assert(v1[13] == 13);
46     assert(v1[14] == 14);
47     assert(v1[15] == 15);
48 }
49