1    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2    	/*                                                                           */
3    	/*                  This file is part of the program and library             */
4    	/*         SCIP --- Solving Constraint Integer Programs                      */
5    	/*                                                                           */
6    	/*  Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB)                      */
7    	/*                                                                           */
8    	/*  Licensed under the Apache License, Version 2.0 (the "License");          */
9    	/*  you may not use this file except in compliance with the License.         */
10   	/*  You may obtain a copy of the License at                                  */
11   	/*                                                                           */
12   	/*      http://www.apache.org/licenses/LICENSE-2.0                           */
13   	/*                                                                           */
14   	/*  Unless required by applicable law or agreed to in writing, software      */
15   	/*  distributed under the License is distributed on an "AS IS" BASIS,        */
16   	/*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17   	/*  See the License for the specific language governing permissions and      */
18   	/*  limitations under the License.                                           */
19   	/*                                                                           */
20   	/*  You should have received a copy of the Apache-2.0 license                */
21   	/*  along with SCIP; see the file LICENSE. If not visit scipopt.org.         */
22   	/*                                                                           */
23   	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24   	
25   	/**@file   type_history.h
26   	 * @ingroup TYPEDEFINITIONS
27   	 * @brief  type definitions for branching and inference history
28   	 * @author Tobias Achterberg
29   	 */
30   	
31   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32   	
33   	#ifndef __SCIP_TYPE_HISTORY_H__
34   	#define __SCIP_TYPE_HISTORY_H__
35   	
36   	#ifdef __cplusplus
37   	extern "C" {
38   	#endif
39   	
40   	/** branching direction for branching on variables */
41   	enum SCIP_BranchDir
42   	{
43   	   SCIP_BRANCHDIR_DOWNWARDS = 0,        /**< downwards branching: decreasing upper bound  */
44   	   SCIP_BRANCHDIR_UPWARDS   = 1,        /**< upwards branching: increasing lower bound    */
45   	   SCIP_BRANCHDIR_FIXED     = 2,        /**< fixed branching: both bounds changed         */
46   	   SCIP_BRANCHDIR_AUTO      = 3         /**< automatic setting for choosing bound changes */
47   	};
48   	typedef enum SCIP_BranchDir SCIP_BRANCHDIR;       /**< branching direction for branching on variables */
49   	
50   	typedef struct SCIP_History SCIP_HISTORY;         /**< branching and inference history information for single variable */
51   	
52   	/** Value history data structure
53   	 *
54   	 *  branching and inference history informations for single variable dependent on the domain value
55   	 *
56   	 *  - \ref SCIP_VALUEHISTORY "List of all available methods"
57   	 */
58   	typedef struct SCIP_ValueHistory SCIP_VALUEHISTORY;
59   	
60   	
61   	#ifdef __cplusplus
62   	}
63   	#endif
64   	
65   	#endif
66