1 // 'struct hash' from SGI -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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 2, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
31 * Copyright (c) 1996-1998
32 * Silicon Graphics Computer Systems, Inc.
34 * Permission to use, copy, modify, distribute and sell this software
35 * and its documentation for any purpose is hereby granted without fee,
36 * provided that the above copyright notice appear in all copies and
37 * that both that copyright notice and this permission notice appear
38 * in supporting documentation. Silicon Graphics makes no
39 * representations about the suitability of this software for any
40 * purpose. It is provided "as is" without express or implied warranty.
44 * Hewlett-Packard Company
46 * Permission to use, copy, modify, distribute and sell this software
47 * and its documentation for any purpose is hereby granted without fee,
48 * provided that the above copyright notice appear in all copies and
49 * that both that copyright notice and this permission notice appear
50 * in supporting documentation. Hewlett-Packard Company makes no
51 * representations about the suitability of this software for any
52 * purpose. It is provided "as is" without express or implied warranty.
56 /** @file ext/hash_fun.h
57 * This file is a GNU extension to the Standard C++ Library (possibly
58 * containing extensions from the HP/SGI STL subset).
66 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
74 __stl_hash_string(const char* __s)
76 unsigned long __h = 0;
86 operator()(const char* __s) const
87 { return __stl_hash_string(__s); }
91 struct hash<const char*>
94 operator()(const char* __s) const
95 { return __stl_hash_string(__s); }
102 operator()(char __x) const
107 struct hash<unsigned char>
110 operator()(unsigned char __x) const
115 struct hash<signed char>
118 operator()(unsigned char __x) const
126 operator()(short __x) const
131 struct hash<unsigned short>
134 operator()(unsigned short __x) const
142 operator()(int __x) const
147 struct hash<unsigned int>
150 operator()(unsigned int __x) const
158 operator()(long __x) const
163 struct hash<unsigned long>
166 operator()(unsigned long __x) const
170 _GLIBCXX_END_NAMESPACE