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