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//===----------------------------------------------------------------------===//
//
// 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 valarray;
// valarray operator[](const gslice& gs) const;
#include <valarray>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
{
int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40};
std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
std::size_t sz[] = {2, 4, 3};
std::size_t st[] = {19, 4, 1};
typedef std::valarray<std::size_t> sizes;
typedef std::valarray<std::size_t> strides;
std::valarray<int> v(v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
strides(st, sizeof(st)/sizeof(st[0])))]);
assert(v.size() == 24);
assert(v[ 0] == 3);
assert(v[ 1] == 4);
assert(v[ 2] == 5);
assert(v[ 3] == 7);
assert(v[ 4] == 8);
assert(v[ 5] == 9);
assert(v[ 6] == 11);
assert(v[ 7] == 12);
assert(v[ 8] == 13);
assert(v[ 9] == 15);
assert(v[10] == 16);
assert(v[11] == 17);
assert(v[12] == 22);
assert(v[13] == 23);
assert(v[14] == 24);
assert(v[15] == 26);
assert(v[16] == 27);
assert(v[17] == 28);
assert(v[18] == 30);
assert(v[19] == 31);
assert(v[20] == 32);
assert(v[21] == 34);
assert(v[22] == 35);
assert(v[23] == 36);
}
{
int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40};
std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
std::size_t sz[] = {2, 4, 3};
std::size_t st[] = {19, 4, 1};
typedef std::valarray<std::size_t> sizes;
typedef std::valarray<std::size_t> strides;
std::valarray<int> v((v1 + 0)[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
strides(st, sizeof(st)/sizeof(st[0])))]);
assert(v.size() == 24);
assert(v[ 0] == 3);
assert(v[ 1] == 4);
assert(v[ 2] == 5);
assert(v[ 3] == 7);
assert(v[ 4] == 8);
assert(v[ 5] == 9);
assert(v[ 6] == 11);
assert(v[ 7] == 12);
assert(v[ 8] == 13);
assert(v[ 9] == 15);
assert(v[10] == 16);
assert(v[11] == 17);
assert(v[12] == 22);
assert(v[13] == 23);
assert(v[14] == 24);
assert(v[15] == 26);
assert(v[16] == 27);
assert(v[17] == 28);
assert(v[18] == 30);
assert(v[19] == 31);
assert(v[20] == 32);
assert(v[21] == 34);
assert(v[22] == 35);
assert(v[23] == 36);
}
return 0;
}
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