//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <valarray>
// template<class T> class gslice_array;
// T __get(size_t i);
#include <valarray>
#include <cassert>
#include "test_macros.h"
int main(int, char**) {
unsigned input[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
const unsigned N = sizeof(input) / sizeof(input[0]);
std::valarray<unsigned> array(input, N);
{
std::gslice_array<unsigned> result =
array[std::gslice(0, std::valarray<std::size_t>(N, 1), std::valarray<std::size_t>(1, 1))];
for (unsigned i = 0; i < N; ++i)
assert(result.__get(i) == i);
}
{
std::valarray<std::size_t> sizes(2);
sizes[0] = 2;
sizes[1] = 3;
std::valarray<std::size_t> strides(2);
strides[0] = 6;
strides[1] = 1;
std::gslice_array<unsigned> result = array[std::gslice(1, sizes, strides)];
assert(result.__get(0) == input[1 + 0 * 6 + 0 * 1]);
assert(result.__get(1) == input[1 + 0 * 6 + 1 * 1]);
assert(result.__get(2) == input[1 + 0 * 6 + 2 * 1]);
assert(result.__get(3) == input[1 + 1 * 6 + 0 * 1]);
assert(result.__get(4) == input[1 + 1 * 6 + 1 * 1]);
assert(result.__get(5) == input[1 + 1 * 6 + 2 * 1]);
}
return 0;
}