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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 gslice_array
// void operator=(const valarray<value_type>& v) const;
#include <valarray>
#include <cassert>
int main(int, char**)
{
int a1[] = { 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};
int a2[] = { -0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11,
-12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[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;
v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
strides(st, sizeof(st)/sizeof(st[0])))] = v2;
assert(v1.size() == 41);
assert(v1[ 0] == 0);
assert(v1[ 1] == 1);
assert(v1[ 2] == 2);
assert(v1[ 3] == 0);
assert(v1[ 4] == -1);
assert(v1[ 5] == -2);
assert(v1[ 6] == 6);
assert(v1[ 7] == -3);
assert(v1[ 8] == -4);
assert(v1[ 9] == -5);
assert(v1[10] == 10);
assert(v1[11] == -6);
assert(v1[12] == -7);
assert(v1[13] == -8);
assert(v1[14] == 14);
assert(v1[15] == -9);
assert(v1[16] == -10);
assert(v1[17] == -11);
assert(v1[18] == 18);
assert(v1[19] == 19);
assert(v1[20] == 20);
assert(v1[21] == 21);
assert(v1[22] == -12);
assert(v1[23] == -13);
assert(v1[24] == -14);
assert(v1[25] == 25);
assert(v1[26] == -15);
assert(v1[27] == -16);
assert(v1[28] == -17);
assert(v1[29] == 29);
assert(v1[30] == -18);
assert(v1[31] == -19);
assert(v1[32] == -20);
assert(v1[33] == 33);
assert(v1[34] == -21);
assert(v1[35] == -22);
assert(v1[36] == -23);
assert(v1[37] == 37);
assert(v1[38] == 38);
assert(v1[39] == 39);
assert(v1[40] == 40);
return 0;
}
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