37 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> valarray<T> operator-(const T& x, const valarray<T>& y);14 15#include <valarray>16#include <cassert>17#include <cstddef>18 19#include "test_macros.h"20 21int 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 = 3 - v1;30 assert(v1.size() == v2.size());31 for (std::size_t i = 0; i < v2.size(); ++i)32 assert(v2[i] == a2[i]);33 }34 35 return 0;36}37