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 valarray;
12 
13 // valarray& operator<<=(const valarray& v);
14 
15 #include <valarray>
16 #include <cassert>
17 #include <cstddef>
18 
19 int main(int, char**)
20 {
21     {
22         typedef int T;
23         T a1[] = { 1,   2,   3,    4,    5};
24         T a2[] = { 6,   7,   8,    9,   10};
25         T a3[] = {64, 256, 768, 2048, 5120};
26         const unsigned N = sizeof(a1)/sizeof(a1[0]);
27         std::valarray<T> v1(a1, N);
28         std::valarray<T> v2(a2, N);
29         std::valarray<T> v3(a3, N);
30         v1 <<= v2;
31         assert(v1.size() == v2.size());
32         assert(v1.size() == v3.size());
33         for (std::size_t i = 0; i < v1.size(); ++i)
34             assert(v1[i] == v3[i]);
35     }
36 
37   return 0;
38 }
39