1 | /**************************************************************************
|
---|
2 | *
|
---|
3 | * perf_hash.h -- Perfect hashing functions
|
---|
4 | * Copyright (C) 1994 Bohdan S. Majewski and Neil Sharman
|
---|
5 | *
|
---|
6 | * This program is free software; you can redistribute it and/or modify
|
---|
7 | * it under the terms of the GNU General Public License as published by
|
---|
8 | * the Free Software Foundation; either version 2 of the License, or
|
---|
9 | * (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This program 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.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU General Public License
|
---|
17 | * along with this program; if not, write to the Free Software
|
---|
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
19 | *
|
---|
20 | **************************************************************************/
|
---|
21 |
|
---|
22 | #ifndef H_PERF_HASH
|
---|
23 | #define H_PERF_HASH
|
---|
24 |
|
---|
25 | struct tb_entry
|
---|
26 | {
|
---|
27 | long tb0, tb1, tb2;
|
---|
28 | };
|
---|
29 |
|
---|
30 | typedef struct
|
---|
31 | {
|
---|
32 | int MAX_L;
|
---|
33 | int MAX_N;
|
---|
34 | int MAX_M;
|
---|
35 | int MAX_CH;
|
---|
36 | u_char *translate;
|
---|
37 | int *g;
|
---|
38 | struct tb_entry **tb;
|
---|
39 | }
|
---|
40 | perf_hash_data;
|
---|
41 |
|
---|
42 | perf_hash_data *gen_hash_func (int num, u_char ** keys, int r);
|
---|
43 |
|
---|
44 | int perf_hash (perf_hash_data * phd, u_char * s);
|
---|
45 |
|
---|
46 | int write_perf_hash_data (FILE * f, perf_hash_data * phd);
|
---|
47 |
|
---|
48 | void free_perf_hash (perf_hash_data * phd);
|
---|
49 |
|
---|
50 | perf_hash_data *read_perf_hash_data (FILE * f);
|
---|
51 |
|
---|
52 | #endif
|
---|