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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
// UNSUPPORTED: c++20 && libcpp-no-concepts
// <charconv>
// struct from_chars_result
// friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
// [charconv.syn]/2
// The types to_chars_result and from_chars_result have the data members and
// special members specified above. They have no base classes or members other
// than those specified.
#include <charconv>
#include <cassert>
#include <compare>
#include <concepts>
#include "test_macros.h"
constexpr bool test() {
std::from_chars_result lhs{nullptr, std::errc{}};
#if TEST_STD_VER > 17
std::from_chars_result rhs{nullptr, std::errc{}};
assert(lhs == rhs);
assert(!(lhs != rhs));
#endif
auto [ptr, ec] = lhs;
static_assert(std::is_same_v<decltype(ptr), const char*>);
assert(ptr == lhs.ptr);
static_assert(std::is_same_v<decltype(ec), std::errc>);
assert(ec == lhs.ec);
return true;
}
int main(int, char**) {
#if TEST_STD_VER > 17
static_assert(std::equality_comparable<std::from_chars_result>);
static_assert(!std::totally_ordered<std::from_chars_result>);
static_assert(!std::three_way_comparable<std::from_chars_result>);
#endif
assert(test());
static_assert(test());
return 0;
}
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