libcxx/include/__charconv/from_chars_result.h

   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_FROM_CHARS_RESULT_H
  11 #define _LIBCPP___CHARCONV_FROM_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 from_chars_result {
  25   const char* ptr;
  26   errc ec;
  27 #  if _LIBCPP_STD_VER >= 20
  28   _LIBCPP_HIDE_FROM_ABI friend bool operator==(const from_chars_result&, const from_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_FROM_CHARS_RESULT_H