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 // value_type& operator[](size_t i);
14 
15 #include <valarray>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 
20 int main(int, char**)
21 {
22     {
23         typedef int T;
24         T a[] = {5, 4, 3, 2, 1};
25         const unsigned N = sizeof(a)/sizeof(a[0]);
26         std::valarray<T> v(a, N);
27         for (unsigned i = 0; i < N; ++i)
28         {
29             assert(v[i] == a[i]);
30             v[i] = i;
31             assert(v[i] == static_cast<int>(i));
32         }
33     }
34 
35   return 0;
36 }
37