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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 mask_array
13 
14 // void operator*=(const valarray<value_type>& v) const;
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     int a2[] = {1, 2, 3, 4, 5};
24     const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
25     bool b[N1] = {true,  false, false, true,  true,  false,
26                   false, true,  false, false, false, true};
27     std::valarray<int> v1(a1, N1);
28     std::valarray<int> v2(a2, N2);
29     assert(N2 == std::count(b, b+N1, true));
30     std::valarray<bool> vb(b, N1);
31     v1[vb] *= v2;
32     assert(v1.size() == 16);
33     assert(v1[ 0] ==  0);
34     assert(v1[ 1] ==  1);
35     assert(v1[ 2] ==  2);
36     assert(v1[ 3] ==  6);
37     assert(v1[ 4] == 12);
38     assert(v1[ 5] ==  5);
39     assert(v1[ 6] ==  6);
40     assert(v1[ 7] == 28);
41     assert(v1[ 8] ==  8);
42     assert(v1[ 9] ==  9);
43     assert(v1[10] == 10);
44     assert(v1[11] == 55);
45     assert(v1[12] == 12);
46     assert(v1[13] == 13);
47     assert(v1[14] == 14);
48     assert(v1[15] == 15);
49 }
50