39 lines · cpp
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-exception6//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