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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;
// template<class T>
// void
// swap(valarray<T>& x, valarray<T>& y);
#include <valarray>
#include <cassert>
#include <cstddef>
int main(int, char**)
{
{
typedef int T;
T a1[] = {1, 2, 3, 4, 5};
T a2[] = {6, 7, 8, 9, 10, 11, 12};
const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
std::valarray<T> v1(a1, N1);
std::valarray<T> v2(a2, N2);
std::valarray<T> v1_save = v1;
std::valarray<T> v2_save = v2;
swap(v1, v2);
assert(v1.size() == v2_save.size());
for (std::size_t i = 0; i < v1.size(); ++i)
assert(v1[i] == v2_save[i]);
assert(v2.size() == v1_save.size());
for (std::size_t i = 0; i < v2.size(); ++i)
assert(v2[i] == v1_save[i]);
}
{
typedef int T;
T a1[] = {1, 2, 3, 4, 5};
const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
std::valarray<T> v1(a1, N1);
std::valarray<T> v2;
std::valarray<T> v1_save = v1;
std::valarray<T> v2_save = v2;
swap(v1, v2);
assert(v1.size() == v2_save.size());
for (std::size_t i = 0; i < v1.size(); ++i)
assert(v1[i] == v2_save[i]);
assert(v2.size() == v1_save.size());
for (std::size_t i = 0; i < v2.size(); ++i)
assert(v2[i] == v1_save[i]);
}
{
typedef int T;
T a2[] = {6, 7, 8, 9, 10, 11, 12};
const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
std::valarray<T> v1;
std::valarray<T> v2(a2, N2);
std::valarray<T> v1_save = v1;
std::valarray<T> v2_save = v2;
swap(v1, v2);
assert(v1.size() == v2_save.size());
for (std::size_t i = 0; i < v1.size(); ++i)
assert(v1[i] == v2_save[i]);
assert(v2.size() == v1_save.size());
for (std::size_t i = 0; i < v2.size(); ++i)
assert(v2[i] == v1_save[i]);
}
{
typedef int T;
std::valarray<T> v1;
std::valarray<T> v2;
std::valarray<T> v1_save = v1;
std::valarray<T> v2_save = v2;
swap(v1, v2);
assert(v1.size() == v2_save.size());
for (std::size_t i = 0; i < v1.size(); ++i)
assert(v1[i] == v2_save[i]);
assert(v2.size() == v1_save.size());
for (std::size_t i = 0; i < v2.size(); ++i)
assert(v2[i] == v1_save[i]);
}
return 0;
}
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