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 
main(int,char **)21 int 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