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 slice_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     int a2[] = {1, 2, 3, 4, 5};
23     std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
24     std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
25     v1[std::slice(1, 5, 3)] &= v2;
26     assert(v1.size() == 16);
27     assert(v1[ 0] ==  0);
28     assert(v1[ 1] ==  1);
29     assert(v1[ 2] ==  2);
30     assert(v1[ 3] ==  3);
31     assert(v1[ 4] ==  0);
32     assert(v1[ 5] ==  5);
33     assert(v1[ 6] ==  6);
34     assert(v1[ 7] ==  3);
35     assert(v1[ 8] ==  8);
36     assert(v1[ 9] ==  9);
37     assert(v1[10] ==  0);
38     assert(v1[11] == 11);
39     assert(v1[12] == 12);
40     assert(v1[13] ==  5);
41     assert(v1[14] == 14);
42     assert(v1[15] == 15);
43 }
44