contrib/gcc-4.4/libstdc++-v3/include/bits/functional_hash.h

   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
  58 namespace 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