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 int main(int, char**) 19 { 20 { 21 typedef int T; 22 T a[] = {5, 4, 3, 2, 1}; 23 const unsigned N = sizeof(a)/sizeof(a[0]); 24 std::valarray<T> v(a, N); 25 for (unsigned i = 0; i < N; ++i) 26 { 27 assert(v[i] == a[i]); 28 v[i] = i; 29 assert(v[i] == static_cast<int>(i)); 30 } 31 } 32 33 return 0; 34 } 35