1 /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
2 Written by James Clark (jjc@jclark.com)
4 This file is part of groff.
6 groff is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 groff is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License along
17 with groff; see the file COPYING. If not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 unsigned long hash_string(const char *s)
27 unsigned long h = 0, g;
31 if ((g = h & 0xf0000000) != 0) {
39 static const unsigned table_sizes[] = {
40 101, 503, 1009, 2003, 3001, 4001, 5003, 10007, 20011, 40009,
41 80021, 160001, 500009, 1000003, 2000003, 4000037, 8000009,
42 16000057, 32000011, 64000031, 128000003, 0
45 unsigned next_ptable_size(unsigned n)
48 for (p = table_sizes; *p <= n; p++)
50 fatal("cannot expand table");