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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 
42 
43 #endif