46 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// void resize(size_t n, value_type x = value_type());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 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);27 std::valarray<T> v1(a1, N1);28 v1.resize(8);29 assert(v1.size() == 8);30 for (std::size_t i = 0; i < v1.size(); ++i)31 assert(v1[i] == 0);32 v1.resize(0);33 assert(v1.size() == 0);34 v1.resize(80);35 assert(v1.size() == 80);36 for (std::size_t i = 0; i < v1.size(); ++i)37 assert(v1[i] == 0);38 v1.resize(40);39 assert(v1.size() == 40);40 for (std::size_t i = 0; i < v1.size(); ++i)41 assert(v1[i] == 0);42 }43 44 return 0;45}46