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66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
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/* -*-C-*-
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********************************************************************************
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*
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* File: closed.h (Formerly closed.h)
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* Description: Hash table for closed search states.
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* Author: Mark Seaman, SW Productivity
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* Created: Fri Oct 16 14:37:00 1987
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* Modified: Fri May 25 11:27:11 1990 (Mark Seaman) marks@hpgrlt
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* Language: C
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* Package: N/A
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* Status: Reusable Software Component
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*
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* (c) Copyright 1987, Hewlett-Packard Company.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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*********************************************************************************/
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#ifndef CLOSED_H
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#define CLOSED_H
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/*----------------------------------------------------------------------
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I n c l u d e s
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----------------------------------------------------------------------*/
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#include <math.h>
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#include "states.h"
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/*----------------------------------------------------------------------
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T y p e s
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----------------------------------------------------------------------*/
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typedef STATE *HASH_TABLE;
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#define NO_STATE ~0
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/*----------------------------------------------------------------------
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V a r i a b l e s
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----------------------------------------------------------------------*/
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extern HASH_TABLE global_hash;
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/*----------------------------------------------------------------------
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M a c r o s
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----------------------------------------------------------------------*/
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/**********************************************************************
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* free_hash_table
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*
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* Free the memory taken by a state variable.
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**********************************************************************/
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#define free_hash_table(table) \
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global_hash = table
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/*---------------------------------------------------------------------
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F u n c t i o n s
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----------------------------------------------------------------------*/
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int hash_add(HASH_TABLE state_table, STATE *state);
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int hash_lookup(HASH_TABLE state_table, STATE *state);
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HASH_TABLE new_hash_table();
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#endif
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