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 // mask_array<value_type> operator[](const valarray<bool>& vb);
15
16 #include <valarray>
17 #include <cassert>
18
main()19 int 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(5);
28 v2 = v1[vb];
29 assert(v2.size() == 5);
30 assert(v2[ 0] == 0);
31 assert(v2[ 1] == 3);
32 assert(v2[ 2] == 4);
33 assert(v2[ 3] == 7);
34 assert(v2[ 4] == 11);
35 }
36