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(const gslice_array<value_type>& sa); 14 15 #include <valarray> 16 #include <cassert> 17 18 int main() 19 { 20 int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 22 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 23 36, 37, 38, 39, 40}; 24 std::valarray<int> v1(a, sizeof(a)/sizeof(a[0])); 25 std::size_t sz[] = {2, 4, 3}; 26 std::size_t st[] = {19, 4, 1}; 27 typedef std::valarray<std::size_t> sizes; 28 typedef std::valarray<std::size_t> strides; 29 std::valarray<int> v(v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])), 30 strides(st, sizeof(st)/sizeof(st[0])))]); 31 assert(v.size() == 24); 32 assert(v[ 0] == 3); 33 assert(v[ 1] == 4); 34 assert(v[ 2] == 5); 35 assert(v[ 3] == 7); 36 assert(v[ 4] == 8); 37 assert(v[ 5] == 9); 38 assert(v[ 6] == 11); 39 assert(v[ 7] == 12); 40 assert(v[ 8] == 13); 41 assert(v[ 9] == 15); 42 assert(v[10] == 16); 43 assert(v[11] == 17); 44 assert(v[12] == 22); 45 assert(v[13] == 23); 46 assert(v[14] == 24); 47 assert(v[15] == 26); 48 assert(v[16] == 27); 49 assert(v[17] == 28); 50 assert(v[18] == 30); 51 assert(v[19] == 31); 52 assert(v[20] == 32); 53 assert(v[21] == 34); 54 assert(v[22] == 35); 55 assert(v[23] == 36); 56 } 57