libstdc++-v3/include/experimental/system_error

   1 // Variable Templates For system_error -*- C++ -*-
   2
   3 // Copyright (C) 2014-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 /** @file experimental/system_error
  26  *  This is a TS C++ Library header.
  27  *  @ingroup libfund-ts
  28  */
  29
  30 //
  31 // N3932 Variable Templates For Type Traits (Revision 1)
  32 //
  33
  34 #ifndef _GLIBCXX_EXPERIMENTAL_SYSTEM_ERROR
  35 #define _GLIBCXX_EXPERIMENTAL_SYSTEM_ERROR 1
  36
  37 #pragma GCC system_header
  38
  39 #include <bits/requires_hosted.h> // experimental is currently omitted
  40
  41 #if __cplusplus >= 201402L
  42
  43 #include <system_error>
  44 #include <experimental/bits/lfts_config.h>
  45
  46 namespace std _GLIBCXX_VISIBILITY(default)
  47 {
  48 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  49
  50 namespace experimental
  51 {
  52 inline namespace fundamentals_v1
  53 {
  54 // See C++14 19.5, System error support
  55 template <typename _Tp>
  56   constexpr bool is_error_code_enum_v = is_error_code_enum<_Tp>::value;
  57 template <typename _Tp>
  58   constexpr bool is_error_condition_enum_v =
  59     is_error_condition_enum<_Tp>::value;
  60 } // namespace fundamentals_v1
  61 } // namespace experimental
  62
  63 _GLIBCXX_END_NAMESPACE_VERSION
  64 } // namespace std
  65
  66 #endif // __cplusplus <= 201103L
  67
  68 #endif // _GLIBCXX_EXPERIMENTAL_SYSTEM_ERROR