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
20int 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

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