cons_integral.c File Reference

Detailed Description

constraint handler for the integrality constraint

Author

Tobias Achterberg

Definition in file cons_integral.c.

#include <assert.h>
#include <string.h>
#include <limits.h>
#include "scip/cons_integral.h"

Go to the source code of this file.

Macros
#define	CONSHDLR_NAME   "integral"
#define	CONSHDLR_DESC   "integrality constraint"
#define	CONSHDLR_ENFOPRIORITY   0
#define	CONSHDLR_CHECKPRIORITY   0
#define	CONSHDLR_EAGERFREQ   -1
#define	CONSHDLR_NEEDSCONS   FALSE
#define	consCopyIntegral   NULL
#define	consEnfopsIntegral   NULL

Functions
static	SCIP_DECL_CONSHDLRCOPY (conshdlrCopyIntegral)
static	SCIP_DECL_CONSENFOLP (consEnfolpIntegral)
static	SCIP_DECL_CONSCHECK (consCheckIntegral)
static	SCIP_DECL_CONSLOCK (consLockIntegral)
SCIP_RETCODE	SCIPincludeConshdlrIntegral (SCIP *scip)

Macro Definition Documentation

#define CONSHDLR_NAME   "integral"

Definition at line 30 of file cons_integral.c.

Referenced by SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOLP(), SCIP_DECL_CONSHDLRCOPY(), and SCIPincludeConshdlrIntegral().

#define CONSHDLR_DESC   "integrality constraint"

Definition at line 31 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define CONSHDLR_ENFOPRIORITY   0

priority of the constraint handler for constraint enforcing

Definition at line 32 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define CONSHDLR_CHECKPRIORITY   0

priority of the constraint handler for checking feasibility

Definition at line 33 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define CONSHDLR_EAGERFREQ   -1

frequency for using all instead of only the useful constraints in separation, propagation and enforcement, -1 for no eager evaluations, 0 for first only

Definition at line 34 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define CONSHDLR_NEEDSCONS   FALSE

should the constraint handler be skipped, if no constraints are available?

Definition at line 36 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define consCopyIntegral   NULL

Definition at line 58 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

#define consEnfopsIntegral   NULL

Definition at line 60 of file cons_integral.c.

Referenced by SCIPincludeConshdlrIntegral().

Function Documentation

static SCIP_DECL_CONSHDLRCOPY ( conshdlrCopyIntegral  )

static

copy method for constraint handler plugins (called when SCIP copies plugins)

Definition at line 44 of file cons_integral.c.

References CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_OKAY, SCIPconshdlrGetName(), SCIPincludeConshdlrIntegral(), and TRUE.

static SCIP_DECL_CONSENFOLP ( consEnfolpIntegral  )

static

constraint enforcing method of constraint handler for LP solutions

Definition at line 64 of file cons_integral.c.

References CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_DIDNOTRUN, SCIP_FEASIBLE, SCIP_INFEASIBLE, SCIP_LPSOLSTAT_UNBOUNDEDRAY, SCIP_OKAY, SCIPbranchLP(), SCIPconshdlrGetName(), SCIPdebugMessage, SCIPgetLPSolstat(), and SCIPgetNLPBranchCands().

static SCIP_DECL_CONSCHECK ( consCheckIntegral  )

static

feasibility check method of constraint handler for integral solutions

Definition at line 100 of file cons_integral.c.

References CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_FEASIBLE, SCIP_INFEASIBLE, SCIP_OKAY, SCIP_Real, SCIPconshdlrGetName(), SCIPdebugMessage, SCIPgetSolVal(), SCIPgetSolVarsData(), SCIPinfoMessage(), SCIPisFeasIntegral(), and SCIPvarGetName().

static SCIP_DECL_CONSLOCK ( consLockIntegral  )

static

variable rounding lock method of constraint handler

Definition at line 174 of file cons_integral.c.

References SCIP_OKAY.

SCIP_RETCODE SCIPincludeConshdlrIntegral

(

SCIP *

scip

)

creates the handler for integrality constraint and includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 184 of file cons_integral.c.

References consCopyIntegral, consEnfopsIntegral, CONSHDLR_CHECKPRIORITY, CONSHDLR_DESC, CONSHDLR_EAGERFREQ, CONSHDLR_ENFOPRIORITY, CONSHDLR_NAME, CONSHDLR_NEEDSCONS, NULL, SCIP_CALL, SCIP_OKAY, SCIPincludeConshdlrBasic(), and SCIPsetConshdlrCopy().

Referenced by SCIP_DECL_CONSHDLRCOPY(), and SCIPincludeDefaultPlugins().