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// 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

source code of libcxx/test/std/numerics/numarray/template.valarray/valarray.members/resize.pass.cpp