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_tree.h
26   	 * @brief  type definitions for branch and bound tree
27   	 * @author Tobias Achterberg
28   	 */
29   	
30   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
31   	
32   	#ifndef __SCIP_TYPE_TREE_H__
33   	#define __SCIP_TYPE_TREE_H__
34   	
35   	#ifdef __cplusplus
36   	extern "C" {
37   	#endif
38   	
39   	enum SCIP_NodeType
40   	{
41   	   SCIP_NODETYPE_FOCUSNODE      =  0,   /**< the focus node, whose data is stored in the tree data structure */
42   	   SCIP_NODETYPE_PROBINGNODE    =  1,   /**< temporary child node of the focus or refocused node used for probing */
43   	   SCIP_NODETYPE_SIBLING        =  2,   /**< unsolved sibling of the focus node */
44   	   SCIP_NODETYPE_CHILD          =  3,   /**< unsolved child of the focus node */
45   	   SCIP_NODETYPE_LEAF           =  4,   /**< unsolved leaf of the tree, stored in the tree's queue */
46   	   SCIP_NODETYPE_DEADEND        =  5,   /**< temporary type of focus node, if it was solved completely */
47   	   SCIP_NODETYPE_JUNCTION       =  6,   /**< fork without LP solution */
48   	   SCIP_NODETYPE_PSEUDOFORK     =  7,   /**< fork without LP solution and added rows and columns */
49   	   SCIP_NODETYPE_FORK           =  8,   /**< fork with solved LP and added rows and columns */
50   	   SCIP_NODETYPE_SUBROOT        =  9,   /**< fork with solved LP and arbitrarily changed rows and columns */
51   	   SCIP_NODETYPE_REFOCUSNODE    = 10    /**< junction, fork, or subroot that was refocused for domain propagation */
52   	};
53   	typedef enum SCIP_NodeType SCIP_NODETYPE;         /**< type of node */
54   	
55   	typedef struct SCIP_Probingnode SCIP_PROBINGNODE; /**< data for probing nodes */
56   	typedef struct SCIP_Sibling SCIP_SIBLING;         /**< data for sibling nodes */
57   	typedef struct SCIP_Child SCIP_CHILD;             /**< data for child nodes */
58   	typedef struct SCIP_Leaf SCIP_LEAF;               /**< data for leaf nodes */
59   	typedef struct SCIP_Junction SCIP_JUNCTION;       /**< data for junction nodes */
60   	typedef struct SCIP_Pseudofork SCIP_PSEUDOFORK;   /**< data for pseudo fork nodes */
61   	typedef struct SCIP_Fork SCIP_FORK;               /**< data for fork nodes */
62   	typedef struct SCIP_Subroot SCIP_SUBROOT;         /**< data for subroot nodes */
63   	typedef struct SCIP_Node SCIP_NODE;               /**< node data structure */
64   	typedef struct SCIP_PendingBdchg SCIP_PENDINGBDCHG; /**< bound change information for pending bound changes */
65   	typedef struct SCIP_Tree SCIP_TREE;               /**< branch and bound tree */
66   	
67   	#ifdef __cplusplus
68   	}
69   	#endif
70   	
71   	#endif
72