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 value_type& x);
14
15 #include <valarray>
16 #include <cassert>
17 #include <cstddef>
18
19 #include "test_macros.h"
20
main(int,char **)21 int main(int, char**)
22 {
23 {
24 typedef int T;
25 T a1[] = { 1, 2, 3, 4, 5};
26 T a2[] = {-2, -1, 0, 1, 2};
27 const unsigned N = sizeof(a1)/sizeof(a1[0]);
28 std::valarray<T> v1(a1, N);
29 std::valarray<T> v2(a2, N);
30 v1 -= 3;
31 assert(v1.size() == v2.size());
32 for (std::size_t i = 0; i < v1.size(); ++i)
33 assert(v1[i] == v2[i]);
34 }
35
36 return 0;
37 }
38