1// functional_hash.h header -*- C++ -*-
2
3// Copyright (C) 2007, 2009 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 bits/functional_hash.h
26 *  This is an internal header file, included by other library headers.
27 *  You should not attempt to use it directly.
28 */
29
30#ifndef _FUNCTIONAL_HASH_H
31#define _FUNCTIONAL_HASH_H 1
32
33#pragma GCC system_header
34
35#ifndef __GXX_EXPERIMENTAL_CXX0X__
36# include <c++0x_warning.h>
37#endif
38
39#if defined(_GLIBCXX_INCLUDE_AS_TR1)
40#  error C++0x header cannot be included from TR1 header
41#endif
42
43#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
44#  include <tr1_impl/functional_hash.h>
45#else
46#  define _GLIBCXX_INCLUDE_AS_CXX0X
47#  define _GLIBCXX_BEGIN_NAMESPACE_TR1
48#  define _GLIBCXX_END_NAMESPACE_TR1
49#  define _GLIBCXX_TR1
50#  include <tr1_impl/functional_hash.h>
51#  undef _GLIBCXX_TR1
52#  undef _GLIBCXX_END_NAMESPACE_TR1
53#  undef _GLIBCXX_BEGIN_NAMESPACE_TR1
54#  undef _GLIBCXX_INCLUDE_AS_CXX0X
55#endif
56
57
58namespace std
59{
60  struct error_code;
61
62  template<>
63    size_t
64    hash<error_code>::operator()(error_code) const;
65}
66
67#endif // _FUNCTIONAL_HASH_H
68
69