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 slice_array;
12
13// T __get(size_t i);
14
15#include <valarray>
16#include <cassert>
17
18#include "test_macros.h"
19
20int main(int, char**) {
21 unsigned input[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
22 const unsigned N = sizeof(input) / sizeof(input[0]);
23
24 std::valarray<unsigned> array(input, N);
25
26 {
27 std::slice_array<unsigned> result = array[std::slice(0, N, 1)];
28 for (unsigned i = 0; i < N; ++i)
29 assert(result.__get(i) == i);
30 }
31
32 {
33 std::slice_array<unsigned> result = array[std::slice(3, 2, 2)];
34 assert(result.__get(0) == 3);
35 assert(result.__get(1) == 5);
36 }
37
38 {
39 std::slice_array<unsigned> result = array[std::slice(1, 3, 4)];
40 assert(result.__get(0) == 1);
41 assert(result.__get(1) == 5);
42 assert(result.__get(2) == 9);
43 }
44
45 return 0;
46}
47

source code of libcxx/test/libcxx/numerics/numarray/class.slice.array/get.pass.cpp