diff options
author | Alexander Kabaev <kan@FreeBSD.org> | 2004-07-28 03:12:05 +0000 |
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committer | Alexander Kabaev <kan@FreeBSD.org> | 2004-07-28 03:12:05 +0000 |
commit | ffeaf689a248da869b6bc8d4fd2233dfe513c060 (patch) | |
tree | 75ef0e6da73746d6849e25a0996ae34e1aeff51d /contrib/libstdc++/include/ext/hash_fun.h | |
parent | 9a63ad9273061dc19cbd117762e365ea9634e241 (diff) |
Gcc 3.4.2 20040728 C++ support bits.
Notes
Notes:
svn path=/vendor/gcc/dist/; revision=132720
Diffstat (limited to 'contrib/libstdc++/include/ext/hash_fun.h')
-rw-r--r-- | contrib/libstdc++/include/ext/hash_fun.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/contrib/libstdc++/include/ext/hash_fun.h b/contrib/libstdc++/include/ext/hash_fun.h new file mode 100644 index 000000000000..27453a6b006b --- /dev/null +++ b/contrib/libstdc++/include/ext/hash_fun.h @@ -0,0 +1,122 @@ +// 'struct hash' from SGI -*- C++ -*- + +// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +/* + * Copyright (c) 1996-1998 + * Silicon Graphics Computer Systems, Inc. + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Silicon Graphics makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * + * Copyright (c) 1994 + * Hewlett-Packard Company + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Hewlett-Packard Company makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + */ + +/** @file ext/hash_fun.h + * This file is a GNU extension to the Standard C++ Library (possibly + * containing extensions from the HP/SGI STL subset). You should only + * include this header if you are using GCC 3 or later. + */ + +#ifndef _HASH_FUN_H +#define _HASH_FUN_H 1 + +#include <cstddef> + +namespace __gnu_cxx +{ + using std::size_t; + + template <class _Key> struct hash { }; + + inline size_t + __stl_hash_string(const char* __s) + { + unsigned long __h = 0; + for ( ; *__s; ++__s) + __h = 5*__h + *__s; + return size_t(__h); + } + + template<> struct hash<char*> + { + size_t operator()(const char* __s) const + { return __stl_hash_string(__s); } + }; + + template<> struct hash<const char*> + { + size_t operator()(const char* __s) const + { return __stl_hash_string(__s); } + }; + + template<> struct hash<char> + { size_t operator()(char __x) const { return __x; } }; + + template<> struct hash<unsigned char> + { size_t operator()(unsigned char __x) const { return __x; } }; + + template<> struct hash<signed char> + { size_t operator()(unsigned char __x) const { return __x; } }; + + template<> struct hash<short> + { size_t operator()(short __x) const { return __x; } }; + + template<> struct hash<unsigned short> + { size_t operator()(unsigned short __x) const { return __x; } }; + + template<> struct hash<int> + { size_t operator()(int __x) const { return __x; } }; + + template<> struct hash<unsigned int> + { size_t operator()(unsigned int __x) const { return __x; } }; + + template<> struct hash<long> + { size_t operator()(long __x) const { return __x; } }; + + template<> struct hash<unsigned long> + { size_t operator()(unsigned long __x) const { return __x; } }; +} // namespace __gnu_cxx + +#endif |