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 // template<class T>
14 //   valarray<T>
15 //   abs(const valarray<T>& x);
16 
17 #include <valarray>
18 #include <cassert>
19 #include <cstddef>
20 
21 #include "test_macros.h"
22 
23 int main(int, char**)
24 {
25     {
26         typedef double T;
27         T a1[] = {1.5,  -2.5,  3.4,  -4.5,  -5.0};
28         T a3[] = {1.5,   2.5,  3.4,   4.5,   5.0};
29         const unsigned N = sizeof(a1)/sizeof(a1[0]);
30         std::valarray<T> v1(a1, N);
31         std::valarray<T> v3 = abs(v1);
32         assert(v3.size() == v1.size());
33         for (std::size_t i = 0; i < v3.size(); ++i)
34             assert(v3[i] == a3[i]);
35     }
36 
37   return 0;
38 }
39