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
23int 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

source code of libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/abs_valarray.pass.cpp