2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 #ifndef _FIRM_HASH_STRING_H_
21 #define _FIRM_HASH_STRING_H_
23 #define _FIRM_FNV_OFFSET_BASIS 2166136261U
24 #define _FIRM_FNV_FNV_PRIME 16777619U
26 static inline __attribute__((pure))
27 unsigned hash_string(const char* str)
29 const unsigned char *p;
30 unsigned hash = _FIRM_FNV_OFFSET_BASIS;
32 for(p = (const unsigned char*) str; *p != 0; ++p) {
33 hash *= _FIRM_FNV_FNV_PRIME;
40 static inline __attribute__((pure))
41 unsigned hash_string_size(const char* str, size_t size)
44 unsigned hash = _FIRM_FNV_OFFSET_BASIS;
46 for(i = 0; i < size; ++i) {
47 hash *= _FIRM_FNV_FNV_PRIME;