Scippy

SCIP

Solving Constraint Integer Programs

branch_multaggr.h
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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, */
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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 branch_multaggr.h
26  * @ingroup BRANCHINGRULES
27  * @brief fullstrong branching on fractional and multi-aggregated variables
28  * @author Anna Melchiori
29  * @author Gerald Gamrath
30  *
31  * This branching rule uses all fractional binary and integer variables as candidates,
32  * as well as fractional multiaggregated binary and integer variables. Although not
33  * directly contained in the presolved problem anymore, the multi-aggregation provides
34  * an affine linear sum of integer variables, on which branching can be performed.
35  *
36  * For more details, see
37  * G.Gamrath, A.Melchiori, T.Berthold, A.M.Gleixner, D.Salvagnin: Branching on Multi-aggregated Variables
38  * (http://dx.doi.org/10.1007/978-3-319-18008-3_10)
39  */
40 
41 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
42 
43 #ifndef __SCIP_BRANCH_MULTAGGR_H__
44 #define __SCIP_BRANCH_MULTAGGR_H__
45 
46 
47 #include "scip/def.h"
48 #include "scip/type_retcode.h"
49 #include "scip/type_scip.h"
50 
51 #ifdef __cplusplus
52 extern "C" {
53 #endif
54 
55 /** creates the multi-aggregated branching rule and includes it in SCIP
56  *
57  * @ingroup BranchingRuleIncludes
58  */
59 SCIP_EXPORT
61  SCIP* scip /**< SCIP data structure */
62  );
63 
64 #ifdef __cplusplus
65 }
66 #endif
67 
68 #endif
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
type definitions for return codes for SCIP methods
type definitions for SCIP&#39;s main datastructure
SCIP_RETCODE SCIPincludeBranchruleMultAggr(SCIP *scip)
common defines and data types used in all packages of SCIP