1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <valarray>
11
12// template<class T> class valarray;
13
14// valarray operator[](const valarray<bool>& vb) const;
15
16#include <valarray>
17#include <cassert>
18
19int main()
20{
21    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
22    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
23    bool b[N1] = {true,  false, false, true,  true,  false,
24                  false, true,  false, false, false, true};
25    std::valarray<int> v1(a1, N1);
26    std::valarray<bool> vb(b, N1);
27    std::valarray<int> v2(v1[vb]);
28    assert(v2.size() == 5);
29    assert(v2[ 0] ==  0);
30    assert(v2[ 1] ==  3);
31    assert(v2[ 2] ==  4);
32    assert(v2[ 3] ==  7);
33    assert(v2[ 4] == 11);
34}
35