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
20int 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

source code of libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/mask_array.pass.cpp