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closed.h
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1 /* -*-C-*-
2 ********************************************************************************
3 *
4 * File: closed.h (Formerly closed.h)
5 * Description: Hash table for closed search states.
6 * Author: Mark Seaman, SW Productivity
7 * Created: Fri Oct 16 14:37:00 1987
8 * Modified: Fri May 25 11:27:11 1990 (Mark Seaman) marks@hpgrlt
9 * Language: C
10 * Package: N/A
11 * Status: Reusable Software Component
12 *
13 * (c) Copyright 1987, Hewlett-Packard Company.
14 ** Licensed under the Apache License, Version 2.0 (the "License");
15 ** you may not use this file except in compliance with the License.
16 ** You may obtain a copy of the License at
17 ** http://www.apache.org/licenses/LICENSE-2.0
18 ** Unless required by applicable law or agreed to in writing, software
19 ** distributed under the License is distributed on an "AS IS" BASIS,
20 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 ** See the License for the specific language governing permissions and
22 ** limitations under the License.
23 *
24 *********************************************************************************/
25
26 #ifndef CLOSED_H
27 #define CLOSED_H
28
29 #include <math.h>
30 #include "states.h"
31
32 typedef STATE *HASH_TABLE;
33 #define NO_STATE ~0
34
35 #define free_hash_table(table) memfree(table)
36
37 int hash_add(HASH_TABLE state_table, STATE *state);
38
39 int hash_lookup(HASH_TABLE state_table, STATE *state);
40
41 HASH_TABLE new_hash_table();
42
43 #endif