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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <optional>
// [optional.nullops], comparison with nullopt
// template<class T>
// constexpr strong_ordering operator<=>(const optional<T>&, nullopt_t) noexcept;
#include <cassert>
#include <compare>
#include <optional>
#include "test_comparisons.h"
constexpr bool test() {
{
std::optional<int> op;
assert((std::nullopt <=> op) == std::strong_ordering::equal);
assert(testOrder(std::nullopt, op, std::strong_ordering::equal));
assert((op <=> std::nullopt) == std::strong_ordering::equal);
assert(testOrder(op, std::nullopt, std::strong_ordering::equal));
}
{
std::optional<int> op{1};
assert((std::nullopt <=> op) == std::strong_ordering::less);
assert(testOrder(std::nullopt, op, std::strong_ordering::less));
}
{
std::optional<int> op{1};
assert((op <=> std::nullopt) == std::strong_ordering::greater);
assert(testOrder(op, std::nullopt, std::strong_ordering::greater));
}
return true;
}
int main(int, char**) {
assert(test());
static_assert(test());
return 0;
}
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