functional: Doxygen markup.

[thirdparty/gcc.git] / libstdc++-v3 / src / hash_c++0x.cc

// std::hash definitions -*- C++ -*-

// Copyright (C) 2007, 2009 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

#include "hash.cc"
#include <system_error>

namespace std
{
  template<>
    size_t
    hash<error_code>::operator()(error_code __e) const
    { 
      const char* __p = reinterpret_cast<const char*>(&__e);
      return _Fnv_hash<>::hash(__p, sizeof(__e));
    }
}