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 // valarray operator[](slice s) const; 14 15 #include <valarray> 16 #include <cassert> 17 18 int main(int, char**) 19 { 20 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 21 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0])); 22 std::valarray<int> v2 = v1[std::slice(1, 5, 3)]; 23 assert(v2.size() == 5); 24 assert(v2[0] == 1); 25 assert(v2[1] == 4); 26 assert(v2[2] == 7); 27 assert(v2[3] == 10); 28 assert(v2[4] == 13); 29 30 return 0; 31 } 32