1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /*                                                                           */
3 /*                  This file is part of the program and library             */
4 /*         SCIP --- Solving Constraint Integer Programs                      */
5 /*                                                                           */
6 /*    Copyright (C) 2002-2021 Konrad-Zuse-Zentrum                            */
7 /*                            fuer Informationstechnik Berlin                */
8 /*                                                                           */
9 /*  SCIP is distributed under the terms of the ZIB Academic License.         */
10 /*                                                                           */
11 /*  You should have received a copy of the ZIB Academic License              */
12 /*  along with SCIP; see the file COPYING. If not visit scipopt.org.         */
13 /*                                                                           */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file   type_history.h
17  * @ingroup TYPEDEFINITIONS
18  * @brief  type definitions for branching and inference history
19  * @author Tobias Achterberg
20  */
21 
22 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
23 
24 #ifndef __SCIP_TYPE_HISTORY_H__
25 #define __SCIP_TYPE_HISTORY_H__
26 
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30 
31 /** branching direction for branching on variables */
32 enum SCIP_BranchDir
33 {
34    SCIP_BRANCHDIR_DOWNWARDS = 0,        /**< downwards branching: decreasing upper bound  */
35    SCIP_BRANCHDIR_UPWARDS   = 1,        /**< upwards branching: increasing lower bound    */
36    SCIP_BRANCHDIR_FIXED     = 2,        /**< fixed branching: both bounds changed         */
37    SCIP_BRANCHDIR_AUTO      = 3         /**< automatic setting for choosing bound changes */
38 };
39 typedef enum SCIP_BranchDir SCIP_BRANCHDIR;       /**< branching direction for branching on variables */
40 
41 typedef struct SCIP_History SCIP_HISTORY;         /**< branching and inference history information for single variable */
42 
43 /** Value history data structure
44  *
45  *  branching and inference history informations for single variable dependent on the domain value
46  *
47  *  - \ref SCIP_VALUEHISTORY "List of all available methods"
48  */
49 typedef struct SCIP_ValueHistory SCIP_VALUEHISTORY;
50 
51 
52 #ifdef __cplusplus
53 }
54 #endif
55 
56 #endif
57