Scippy

SCIP

Solving Constraint Integer Programs

cons_samediff.h File Reference

Detailed Description

Constraint handler stores the local branching decision data.

Author
Timo Berthold
Stefan Heinz

This constraint handler is used to store the branching decision of the Ryan/Foster branching rule which is implemented in branch_ryanfoster.c.

Definition in file cons_samediff.h.

#include "scip/scip.h"

Go to the source code of this file.

Typedefs

typedef enum ConsType CONSTYPE
 

Enumerations

enum  ConsType {
  DIFFER = 0,
  SAME = 1
}
 

Functions

SCIP_RETCODE SCIPincludeConshdlrSamediff (SCIP *scip)
 
SCIP_RETCODE SCIPcreateConsSamediff (SCIP *scip, SCIP_CONS **cons, const char *name, int itemid1, int itemid2, CONSTYPE type, SCIP_NODE *node, SCIP_Bool local)
 
int SCIPgetItemid1Samediff (SCIP *scip, SCIP_CONS *cons)
 
int SCIPgetItemid2Samediff (SCIP *scip, SCIP_CONS *cons)
 
CONSTYPE SCIPgetTypeSamediff (SCIP *scip, SCIP_CONS *cons)
 

Typedef Documentation

◆ CONSTYPE

typedef enum ConsType CONSTYPE

Definition at line 40 of file cons_samediff.h.

Enumeration Type Documentation

◆ ConsType

enum ConsType
Enumerator
DIFFER 

constraint representing the branching decision differ(i,j)

SAME 

constraint representing the branching decision same(i,j)

Definition at line 35 of file cons_samediff.h.

Function Documentation

◆ SCIPincludeConshdlrSamediff()

◆ SCIPcreateConsSamediff()

SCIP_RETCODE SCIPcreateConsSamediff ( SCIP scip,
SCIP_CONS **  cons,
const char *  name,
int  itemid1,
int  itemid2,
CONSTYPE  type,
SCIP_NODE node,
SCIP_Bool  local 
)

creates and captures a samediff constraint

Parameters
scipSCIP data structure
conspointer to hold the created constraint
namename of constraint
itemid1item id one
itemid2item id two
typestores whether the items have to be in the SAME or DIFFER packing
nodethe node in the B&B-tree at which the cons is sticking
localis constraint only valid locally?

Definition at line 551 of file cons_samediff.c.

References consdataCreate(), consdataPrint(), CONSHDLR_NAME, FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPcreateCons(), SCIPdebug, SCIPdebugMsg, SCIPerrorMessage, SCIPfindConshdlr(), SCIPgetItemid1Samediff(), and TRUE.

Referenced by SCIP_DECL_BRANCHEXECLP(), and SCIPincludeConshdlrSamediff().

◆ SCIPgetItemid1Samediff()

int SCIPgetItemid1Samediff ( SCIP scip,
SCIP_CONS cons 
)

returns item id one

Parameters
scipSCIP data structure
conssamediff constraint

Definition at line 587 of file cons_samediff.c.

References NULL, SCIPconsGetData(), and SCIPgetItemid2Samediff().

Referenced by addBranchingDecisionConss(), and SCIPcreateConsSamediff().

◆ SCIPgetItemid2Samediff()

int SCIPgetItemid2Samediff ( SCIP scip,
SCIP_CONS cons 
)

returns item id two

Parameters
scipSCIP data structure
conssamediff constraint

Definition at line 603 of file cons_samediff.c.

References NULL, SCIPconsGetData(), and SCIPgetTypeSamediff().

Referenced by addBranchingDecisionConss(), and SCIPgetItemid1Samediff().

◆ SCIPgetTypeSamediff()

CONSTYPE SCIPgetTypeSamediff ( SCIP scip,
SCIP_CONS cons 
)

return constraint type SAME or DIFFER

Parameters
scipSCIP data structure
conssamediff constraint

Definition at line 619 of file cons_samediff.c.

References NULL, and SCIPconsGetData().

Referenced by addBranchingDecisionConss(), and SCIPgetItemid2Samediff().