37 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// 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