| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // <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; |
| } |