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      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
     69