release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/backward/hash_fun.h

   1 // 'struct hash' from SGI -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2009, 2010
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 /*
  27  * Copyright (c) 1996-1998
  28  * Silicon Graphics Computer Systems, Inc.
  29  *
  30  * Permission to use, copy, modify, distribute and sell this software
  31  * and its documentation for any purpose is hereby granted without fee,
  32  * provided that the above copyright notice appear in all copies and
  33  * that both that copyright notice and this permission notice appear
  34  * in supporting documentation.  Silicon Graphics makes no
  35  * representations about the suitability of this software for any
  36  * purpose.  It is provided "as is" without express or implied warranty.
  37  *
  38  *
  39  * Copyright (c) 1994
  40  * Hewlett-Packard Company
  41  *
  42  * Permission to use, copy, modify, distribute and sell this software
  43  * and its documentation for any purpose is hereby granted without fee,
  44  * provided that the above copyright notice appear in all copies and
  45  * that both that copyright notice and this permission notice appear
  46  * in supporting documentation.  Hewlett-Packard Company makes no
  47  * representations about the suitability of this software for any
  48  * purpose.  It is provided "as is" without express or implied warranty.
  49  *
  50  */
  51
  52 /** @file backward/hash_fun.h
  53  *  This file is a GNU extension to the Standard C++ Library (possibly
  54  *  containing extensions from the HP/SGI STL subset).
  55  */
  56
  57 #ifndef _BACKWARD_HASH_FUN_H
  58 #define _BACKWARD_HASH_FUN_H 1
  59
  60 #include <cstddef>
  61
  62 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
  63
  64   using std::size_t;
  65
  66   template<class _Key>
  67     struct hash { };
  68
  69   inline size_t
  70   __stl_hash_string(const char* __s)
  71   {
  72     unsigned long __h = 0;
  73     for ( ; *__s; ++__s)
  74       __h = 5 * __h + *__s;
  75     return size_t(__h);
  76   }
  77
  78   template<>
  79     struct hash<char*>
  80     {
  81       size_t
  82       operator()(const char* __s) const
  83       { return __stl_hash_string(__s); }
  84     };
  85
  86   template<>
  87     struct hash<const char*>
  88     {
  89       size_t
  90       operator()(const char* __s) const
  91       { return __stl_hash_string(__s); }
  92     };
  93
  94   template<>
  95     struct hash<char>
  96     {
  97       size_t
  98       operator()(char __x) const
  99       { return __x; }
 100     };
 101
 102   template<>
 103     struct hash<unsigned char>
 104     {
 105       size_t
 106       operator()(unsigned char __x) const
 107       { return __x; }
 108     };
 109
 110   template<>
 111     struct hash<signed char>
 112     {
 113       size_t
 114       operator()(unsigned char __x) const
 115       { return __x; }
 116     };
 117
 118   template<>
 119     struct hash<short>
 120     {
 121       size_t
 122       operator()(short __x) const
 123       { return __x; }
 124     };
 125
 126   template<>
 127     struct hash<unsigned short>
 128     {
 129       size_t
 130       operator()(unsigned short __x) const
 131       { return __x; }
 132     };
 133
 134   template<>
 135     struct hash<int>
 136     {
 137       size_t
 138       operator()(int __x) const
 139       { return __x; }
 140     };
 141
 142   template<>
 143     struct hash<unsigned int>
 144     {
 145       size_t
 146       operator()(unsigned int __x) const
 147       { return __x; }
 148     };
 149
 150   template<>
 151     struct hash<long>
 152     {
 153       size_t
 154       operator()(long __x) const
 155       { return __x; }
 156     };
 157
 158   template<>
 159     struct hash<unsigned long>
 160     {
 161       size_t
 162       operator()(unsigned long __x) const
 163       { return __x; }
 164     };
 165
 166 _GLIBCXX_END_NAMESPACE
 167
 168 #endif