1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___CHARCONV_TO_CHARS_RESULT_H 11 #define _LIBCPP___CHARCONV_TO_CHARS_RESULT_H 12 13 #include <__config> 14 #include <__system_error/errc.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 #if _LIBCPP_STD_VER >= 17 23 24 struct _LIBCPP_EXPORTED_FROM_ABI to_chars_result { 25 char* ptr; 26 errc ec; 27 # if _LIBCPP_STD_VER >= 20 28 _LIBCPP_HIDE_FROM_ABI friend bool operator==(const to_chars_result&, const to_chars_result&) = default; 29 # endif 30 # if _LIBCPP_STD_VER >= 26 31 _LIBCPP_HIDE_FROM_ABI constexpr explicit operator bool() const noexcept { return ec == errc{}; } 32 # endif 33 }; 34 35 #endif // _LIBCPP_STD_VER >= 17 36 37 _LIBCPP_END_NAMESPACE_STD 38 39 #endif // _LIBCPP___CHARCONV_TO_CHARS_RESULT_H 40