# bits/functional_hash.h

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    00001 // functional_hash.h header -*- C++ -*-
    00002
    00003 // Copyright (C) 2007, 2009 Free Software Foundation, Inc.
    00004 //
    00005 // This file is part of the GNU ISO C++ Library.  This library is free
    00006 // software; you can redistribute it and/or modify it under the
    00007 // terms of the GNU General Public License as published by the
    00008 // Free Software Foundation; either version 3, or (at your option)
    00009 // any later version.
    00010
    00011 // This library is distributed in the hope that it will be useful,
    00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00014 // GNU General Public License for more details.
    00015
    00016 // Under Section 7 of GPL version 3, you are granted additional
    00017 // permissions described in the GCC Runtime Library Exception, version
    00018 // 3.1, as published by the Free Software Foundation.
    00019
    00020 // You should have received a copy of the GNU General Public License and
    00021 // a copy of the GCC Runtime Library Exception along with this program;
    00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    00023 // <http://www.gnu.org/licenses/>.
    00024
    00025 /** @file bits/functional_hash.h
    00026  *  This is an internal header file, included by other library headers.
    00027  *  You should not attempt to use it directly.
    00028  */
    00029
    00030 #ifndef _FUNCTIONAL_HASH_H
    00031 #define _FUNCTIONAL_HASH_H 1
    00032
    00033 #pragma GCC system_header
    00034
    00035 #ifndef __GXX_EXPERIMENTAL_CXX0X__
    00036 # include <c++0x_warning.h>
    00037 #endif
    00038
    00039 #if defined(_GLIBCXX_INCLUDE_AS_TR1)
    00040 #  error C++0x header cannot be included from TR1 header
    00041 #endif
    00042
    00043 #if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
    00044 #  include <tr1_impl/functional_hash.h>
    00045 #else
    00046 #  define _GLIBCXX_INCLUDE_AS_CXX0X
    00047 #  define _GLIBCXX_BEGIN_NAMESPACE_TR1
    00048 #  define _GLIBCXX_END_NAMESPACE_TR1
    00049 #  define _GLIBCXX_TR1
    00050 #  include <tr1_impl/functional_hash.h>
    00051 #  undef _GLIBCXX_TR1
    00052 #  undef _GLIBCXX_END_NAMESPACE_TR1
    00053 #  undef _GLIBCXX_BEGIN_NAMESPACE_TR1
    00054 #  undef _GLIBCXX_INCLUDE_AS_CXX0X
    00055 #endif
    00056
    00057
    00058 namespace std
    00059 {
    00060   struct error_code;
    00061
    00062   template<>
    00063     size_t
    00064     hash<error_code>::operator()(error_code) const;
    00065 }
    00066
    00067 #endif // _FUNCTIONAL_HASH_H
    00068