1 // 'struct hash' from SGI -*- C++ -*-
3 // Copyright (C) 2001-2016 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 3, 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 // 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.
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/>.
26 * Copyright (c) 1996-1998
27 * Silicon Graphics Computer Systems, Inc.
29 * Permission to use, copy, modify, distribute and sell this software
30 * and its documentation for any purpose is hereby granted without fee,
31 * provided that the above copyright notice appear in all copies and
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33 * in supporting documentation. Silicon Graphics makes no
34 * representations about the suitability of this software for any
35 * purpose. It is provided "as is" without express or implied warranty.
39 * Hewlett-Packard Company
41 * Permission to use, copy, modify, distribute and sell this software
42 * and its documentation for any purpose is hereby granted without fee,
43 * provided that the above copyright notice appear in all copies and
44 * that both that copyright notice and this permission notice appear
45 * in supporting documentation. Hewlett-Packard Company makes no
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47 * purpose. It is provided "as is" without express or implied warranty.
51 /** @file backward/hash_fun.h
52 * This file is a GNU extension to the Standard C++ Library (possibly
53 * containing extensions from the HP/SGI STL subset).
56 #ifndef _BACKWARD_HASH_FUN_H
57 #define _BACKWARD_HASH_FUN_H 1
59 #include <bits/c++config.h>
61 namespace __gnu_cxx
_GLIBCXX_VISIBILITY(default)
63 _GLIBCXX_BEGIN_NAMESPACE_VERSION
71 __stl_hash_string(const char* __s
)
73 unsigned long __h
= 0;
83 operator()(const char* __s
) const
84 { return __stl_hash_string(__s
); }
88 struct hash
<const char*>
91 operator()(const char* __s
) const
92 { return __stl_hash_string(__s
); }
99 operator()(char __x
) const
104 struct hash
<unsigned char>
107 operator()(unsigned char __x
) const
112 struct hash
<signed char>
115 operator()(unsigned char __x
) const
123 operator()(short __x
) const
128 struct hash
<unsigned short>
131 operator()(unsigned short __x
) const
139 operator()(int __x
) const
144 struct hash
<unsigned int>
147 operator()(unsigned int __x
) const
155 operator()(long __x
) const
160 struct hash
<unsigned long>
163 operator()(unsigned long __x
) const
167 _GLIBCXX_END_NAMESPACE_VERSION