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- /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-
- This file is part of groff.
-
- groff 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.
-
- groff 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 groff; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "ptable.h"
- #include "errarg.h"
- #include "error.h"
-
- unsigned long hash_string(const char *s)
- {
- assert(s != 0);
- unsigned long h = 0, g;
- while (*s != 0) {
- h <<= 4;
- h += *s++;
- if ((g = h & 0xf0000000) != 0) {
- h ^= g >> 24;
- h ^= g;
- }
- }
- return h;
- }
-
- static const unsigned table_sizes[] = {
- 101, 503, 1009, 2003, 3001, 4001, 5003, 10007, 20011, 40009,
- 80021, 160001, 500009, 1000003, 2000003, 4000037, 8000009,
- 16000057, 32000011, 64000031, 128000003, 0
- };
-
- unsigned next_ptable_size(unsigned n)
- {
- for (const unsigned *p = table_sizes; *p <= n; p++)
- if (*p == 0)
- fatal("cannot expand table");
- return *p;
- }
-