Detailed Description

public methods for relaxation handlers

Functions
SCIP_EXPORT	SCIP_DECL_SORTPTRCOMP (SCIPrelaxComp)

SCIP_EXPORT	SCIP_DECL_SORTPTRCOMP (SCIPrelaxCompName)

SCIP_EXPORT SCIP_RELAXDATA *	SCIPrelaxGetData (SCIP_RELAX *relax)

SCIP_EXPORT void	SCIPrelaxSetData (SCIP_RELAX relax, SCIP_RELAXDATA relaxdata)

SCIP_EXPORT const char *	SCIPrelaxGetName (SCIP_RELAX *relax)

SCIP_EXPORT const char *	SCIPrelaxGetDesc (SCIP_RELAX *relax)

SCIP_EXPORT int	SCIPrelaxGetPriority (SCIP_RELAX *relax)

SCIP_EXPORT int	SCIPrelaxGetFreq (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Real	SCIPrelaxGetSetupTime (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Real	SCIPrelaxGetTime (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNCalls (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNCutoffs (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNImprovedLowerbound (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Real	SCIPrelaxGetImprovedLowerboundTime (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNAddedConss (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNReducedDomains (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Longint	SCIPrelaxGetNSeparatedCuts (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_Bool	SCIPrelaxIsInitialized (SCIP_RELAX *relax)

SCIP_EXPORT void	SCIPrelaxMarkUnsolved (SCIP_RELAX *relax)

SCIP_EXPORT SCIP_RETCODE	SCIPincludeRelax (SCIP scip, const char name, const char desc, int priority, int freq, SCIP_DECL_RELAXCOPY((relaxcopy)), SCIP_DECL_RELAXFREE((relaxfree)), SCIP_DECL_RELAXINIT((relaxinit)), SCIP_DECL_RELAXEXIT((relaxexit)), SCIP_DECL_RELAXINITSOL((relaxinitsol)), SCIP_DECL_RELAXEXITSOL((relaxexitsol)), SCIP_DECL_RELAXEXEC((relaxexec)), SCIP_RELAXDATA *relaxdata)

SCIP_EXPORT SCIP_RETCODE	SCIPincludeRelaxBasic (SCIP scip, SCIP_RELAX relaxptr, const char name, const char desc, int priority, int freq, SCIP_DECL_RELAXEXEC((relaxexec)), SCIP_RELAXDATA *relaxdata)

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxCopy (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXCOPY((*relaxcopy)))

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxFree (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXFREE((*relaxfree)))

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxInit (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXINIT((*relaxinit)))

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxExit (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXEXIT((*relaxexit)))

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxInitsol (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXINITSOL((*relaxinitsol)))

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxExitsol (SCIP scip, SCIP_RELAX relax, SCIP_DECL_RELAXEXITSOL((*relaxexitsol)))

SCIP_EXPORT SCIP_RELAX *	SCIPfindRelax (SCIP scip, const char name)

SCIP_EXPORT SCIP_RELAX **	SCIPgetRelaxs (SCIP *scip)

SCIP_EXPORT int	SCIPgetNRelaxs (SCIP *scip)

SCIP_EXPORT SCIP_RETCODE	SCIPsetRelaxPriority (SCIP scip, SCIP_RELAX relax, int priority)

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP() [1/2]

SCIP_EXPORT SCIP_DECL_SORTPTRCOMP ( SCIPrelaxComp )

compares two relaxation handlers w. r. to their priority

Definition at line 46 of file relax.c.

◆ SCIP_DECL_SORTPTRCOMP() [2/2]

SCIP_EXPORT SCIP_DECL_SORTPTRCOMP ( SCIPrelaxCompName )

comparison method for sorting relaxators w.r.t. to their name

Definition at line 52 of file relax.c.

References SCIPrelaxGetName().

◆ SCIPrelaxGetData()

SCIP_EXPORT SCIP_RELAXDATA* SCIPrelaxGetData ( SCIP_RELAX * relax )

gets user data of relaxation handler

Parameters

relax relaxation handler

Definition at line 440 of file relax.c.

References NULL, and SCIP_Relax::relaxdata.

Referenced by SCIP_DECL_RELAXCOPY(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_RELAXEXIT(), SCIP_DECL_RELAXEXITSOL(), SCIP_DECL_RELAXFREE(), SCIP_DECL_RELAXINIT(), SCIP_DECL_RELAXINITSOL(), SCIPfindObjRelax(), and SCIPgetObjRelax().

◆ SCIPrelaxSetData()

SCIP_EXPORT void SCIPrelaxSetData	(	SCIP_RELAX *	relax,
		SCIP_RELAXDATA *	relaxdata
	)

sets user data of relaxation handler; user has to free old data in advance!

Parameters

relax	relaxation handler
relaxdata	new relaxation handler user data

Definition at line 450 of file relax.c.

References NULL, and SCIP_Relax::relaxdata.

Referenced by SCIP_DECL_RELAXFREE().

◆ SCIPrelaxGetName()

SCIP_EXPORT const char* SCIPrelaxGetName ( SCIP_RELAX * relax )

gets name of relaxation handler

Parameters

relax relaxation handler

Definition at line 527 of file relax.c.

References SCIP_Relax::name, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_SORTPTRCOMP(), SCIPprintRelaxatorStatistics(), SCIPrelaxCopyInclude(), SCIPsetFindPresol(), SCIPsolveProbingRelax(), and solveNodeRelax().

◆ SCIPrelaxGetDesc()

SCIP_EXPORT const char* SCIPrelaxGetDesc ( SCIP_RELAX * relax )

gets description of relaxation handler

Parameters

relax relaxation handler

Definition at line 537 of file relax.c.

References SCIP_Relax::desc, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC().

◆ SCIPrelaxGetPriority()

SCIP_EXPORT int SCIPrelaxGetPriority ( SCIP_RELAX * relax )

gets priority of relaxation handler

Parameters

relax relaxation handler

Definition at line 547 of file relax.c.

References NULL, and SCIP_Relax::priority.

Referenced by SCIP_DECL_DIALOGEXEC(), and solveNodeRelax().

◆ SCIPrelaxGetFreq()

SCIP_EXPORT int SCIPrelaxGetFreq ( SCIP_RELAX * relax )

gets frequency of relaxation handler

Parameters

relax relaxation handler

Definition at line 571 of file relax.c.

References SCIP_Relax::freq, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC().

◆ SCIPrelaxGetSetupTime()

SCIP_EXPORT SCIP_Real SCIPrelaxGetSetupTime ( SCIP_RELAX * relax )

gets time in seconds used in this relaxator for setting up for next stages

Parameters

relax relaxator

Definition at line 581 of file relax.c.

References NULL, SCIPclockGetTime(), and SCIP_Relax::setuptime.

◆ SCIPrelaxGetTime()

SCIP_EXPORT SCIP_Real SCIPrelaxGetTime ( SCIP_RELAX * relax )

gets time in seconds used in this relaxation handler

Parameters

relax relaxation handler

Definition at line 603 of file relax.c.

References NULL, SCIP_Relax::relaxclock, and SCIPclockGetTime().

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNCalls()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNCalls ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler was called

Parameters

relax relaxation handler

Definition at line 613 of file relax.c.

References SCIP_Relax::ncalls, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNCutoffs()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNCutoffs ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler cut off a node

Parameters

relax relaxation handler

Definition at line 623 of file relax.c.

References SCIP_Relax::ncutoffs, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNImprovedLowerbound()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNImprovedLowerbound ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler improved a node's lower bound

Parameters

relax relaxation handler

Definition at line 633 of file relax.c.

References SCIP_Relax::nimprbounds, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetImprovedLowerboundTime()

SCIP_EXPORT SCIP_Real SCIPrelaxGetImprovedLowerboundTime ( SCIP_RELAX * relax )

gets the time in seconds spent for the execution of the relaxation handler when a node's lower bound could be improved (or a cutoff was found)

Parameters

relax relaxation handler

Definition at line 653 of file relax.c.

References SCIP_Relax::imprtime, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNAddedConss()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNAddedConss ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler added constraints

Parameters

relax relaxation handler

Definition at line 643 of file relax.c.

References SCIP_Relax::naddedconss, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNReducedDomains()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNReducedDomains ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler reduced variable domains

Parameters

relax relaxation handler

Definition at line 663 of file relax.c.

References SCIP_Relax::nreduceddom, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxGetNSeparatedCuts()

SCIP_EXPORT SCIP_Longint SCIPrelaxGetNSeparatedCuts ( SCIP_RELAX * relax )

gets the total number of times the relaxation handler separated cutting planes

Parameters

relax relaxation handler

Definition at line 673 of file relax.c.

References SCIP_Relax::nseparated, and NULL.

Referenced by SCIPprintRelaxatorStatistics().

◆ SCIPrelaxIsInitialized()

SCIP_EXPORT SCIP_Bool SCIPrelaxIsInitialized ( SCIP_RELAX * relax )

is relaxation handler initialized?

Parameters

relax relaxation handler

Definition at line 683 of file relax.c.

References SCIP_Relax::initialized, and NULL.

Referenced by SCIPsetIncludePresol().

◆ SCIPrelaxMarkUnsolved()

SCIP_EXPORT void SCIPrelaxMarkUnsolved ( SCIP_RELAX * relax )

marks the current relaxation unsolved, s.t. the relaxation handler is called again in the next solving round

Parameters

relax relaxation handler

Definition at line 705 of file relax.c.

References SCIP_Relax::lastsolvednode, and NULL.

Referenced by markRelaxsUnsolved(), and SCIPrelaxExec().

◆ SCIPincludeRelax()

SCIP_EXPORT SCIP_RETCODE SCIPincludeRelax	(	SCIP *	scip,
		const char *	name,
		const char *	desc,
		int	priority,
		int	freq,
		SCIP_DECL_RELAXCOPY((*relaxcopy))	,
		SCIP_DECL_RELAXFREE((*relaxfree))	,
		SCIP_DECL_RELAXINIT((*relaxinit))	,
		SCIP_DECL_RELAXEXIT((*relaxexit))	,
		SCIP_DECL_RELAXINITSOL((*relaxinitsol))	,
		SCIP_DECL_RELAXEXITSOL((*relaxexitsol))	,
		SCIP_DECL_RELAXEXEC((*relaxexec))	,
		SCIP_RELAXDATA *	relaxdata
	)

creates a relaxation handler and includes it in SCIP

Note: method has all relaxation handler callbacks as arguments and is thus changed every time a new callback is added in future releases; consider using SCIPincludeRelaxBasic() and setter functions if you seek for a method which is less likely to change in future releases

Parameters

scip	SCIP data structure
name	name of relaxation handler
desc	description of relaxation handler
priority	priority of the relaxation handler (negative: after LP, non-negative: before LP)
freq	frequency for calling relaxation handler
relaxdata	relaxation handler data

Definition at line 52 of file scip_relax.c.

References FALSE, Scip::mem, Scip::messagehdlr, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPcheckStage(), SCIPerrorMessage, SCIPfindRelax(), SCIPrelaxCreate(), SCIPsetIncludeRelax(), Scip::set, SCIP_Mem::setmem, and TRUE.

Referenced by SCIPincludeObjRelax().

◆ SCIPincludeRelaxBasic()

SCIP_EXPORT SCIP_RETCODE SCIPincludeRelaxBasic	(	SCIP *	scip,
		SCIP_RELAX **	relaxptr,
		const char *	name,
		const char *	desc,
		int	priority,
		int	freq,
		SCIP_DECL_RELAXEXEC((*relaxexec))	,
		SCIP_RELAXDATA *	relaxdata
	)

creates a relaxation handler and includes it in SCIP. All non fundamental (or optional) callbacks as, e.g., init and exit callbacks, will be set to NULL. Optional callbacks can be set via specific setter functions, see SCIPsetRelaxInit(), SCIPsetRelaxExit(), SCIPsetRelaxCopy(), SCIPsetRelaxFree(), SCIPsetRelaxInitsol(), and SCIPsetRelaxExitsol()

Note: if you want to set all callbacks with a single method call, consider using SCIPincludeRelax() instead

Parameters

scip	SCIP data structure
relaxptr	reference to relaxation pointer, or NULL
name	name of relaxation handler
desc	description of relaxation handler
priority	priority of the relaxation handler (negative: after LP, non-negative: before LP)
freq	frequency for calling relaxation handler
relaxdata	relaxation handler data

Definition at line 94 of file scip_relax.c.

References FALSE, Scip::mem, Scip::messagehdlr, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPcheckStage(), SCIPerrorMessage, SCIPfindRelax(), SCIPrelaxCreate(), SCIPsetIncludeRelax(), Scip::set, SCIP_Mem::setmem, and TRUE.

Referenced by SCIPincludeRelaxLp(), and SCIPincludeRelaxNlp().

◆ SCIPsetRelaxCopy()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxCopy	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXCOPY((*relaxcopy))
	)

sets copy method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 128 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetCopy(), and TRUE.

◆ SCIPsetRelaxFree()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxFree	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXFREE((*relaxfree))
	)

sets destructor method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 144 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetFree(), and TRUE.

◆ SCIPsetRelaxInit()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxInit	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXINIT((*relaxinit))
	)

sets initialization method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 160 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetInit(), and TRUE.

◆ SCIPsetRelaxExit()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxExit	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXEXIT((*relaxexit))
	)

sets deinitialization method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 176 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetExit(), and TRUE.

◆ SCIPsetRelaxInitsol()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxInitsol	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXINITSOL((*relaxinitsol))
	)

sets solving process initialization method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 192 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetInitsol(), and TRUE.

Referenced by SCIPincludeRelaxNlp().

◆ SCIPsetRelaxExitsol()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxExitsol	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		SCIP_DECL_RELAXEXITSOL((*relaxexitsol))
	)

sets solving process deinitialization method of relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler

Definition at line 208 of file scip_relax.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPrelaxSetExitsol(), and TRUE.

Referenced by SCIPincludeRelaxNlp().

◆ SCIPfindRelax()

SCIP_EXPORT SCIP_RELAX* SCIPfindRelax	(	SCIP *	scip,
		const char *	name
	)

returns the relaxation handler of the given name, or NULL if not existing

Parameters

scip	SCIP data structure
name	name of relaxation handler

Definition at line 225 of file scip_relax.c.

References NULL, SCIPsetFindRelax(), and Scip::set.

Referenced by SCIPfindObjRelax(), SCIPincludeRelax(), and SCIPincludeRelaxBasic().

◆ SCIPgetRelaxs()

SCIP_EXPORT SCIP_RELAX** SCIPgetRelaxs ( SCIP * scip )

returns the array of currently available relaxation handlers

Parameters

scip	SCIP data structure

Definition at line 238 of file scip_relax.c.

References NULL, SCIP_Set::relaxs, SCIPsetSortRelaxs(), and Scip::set.

Referenced by SCIP_DECL_DIALOGEXEC().

◆ SCIPgetNRelaxs()

SCIP_EXPORT int SCIPgetNRelaxs ( SCIP * scip )

returns the number of currently available relaxation handlers

Parameters

scip	SCIP data structure

Definition at line 251 of file scip_relax.c.

References SCIP_Set::nrelaxs, NULL, and Scip::set.

Referenced by SCIP_DECL_DIALOGEXEC().

◆ SCIPsetRelaxPriority()

SCIP_EXPORT SCIP_RETCODE SCIPsetRelaxPriority	(	SCIP *	scip,
		SCIP_RELAX *	relax,
		int	priority
	)

sets the priority of a relaxation handler

Parameters

scip	SCIP data structure
relax	relaxation handler
priority	new priority of the relaxation handler

Definition at line 262 of file scip_relax.c.

References NULL, SCIP_OKAY, SCIPrelaxSetPriority(), and Scip::set.

Referenced by SCIP_DECL_PARAMCHGD().

SCIP

Detailed Description

Functions

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP() [1/2]

◆ SCIP_DECL_SORTPTRCOMP() [2/2]

◆ SCIPrelaxGetData()

◆ SCIPrelaxSetData()

◆ SCIPrelaxGetName()

◆ SCIPrelaxGetDesc()

◆ SCIPrelaxGetPriority()

◆ SCIPrelaxGetFreq()

◆ SCIPrelaxGetSetupTime()

◆ SCIPrelaxGetTime()

◆ SCIPrelaxGetNCalls()

◆ SCIPrelaxGetNCutoffs()

◆ SCIPrelaxGetNImprovedLowerbound()

◆ SCIPrelaxGetImprovedLowerboundTime()

◆ SCIPrelaxGetNAddedConss()

◆ SCIPrelaxGetNReducedDomains()

◆ SCIPrelaxGetNSeparatedCuts()

◆ SCIPrelaxIsInitialized()

◆ SCIPrelaxMarkUnsolved()

◆ SCIPincludeRelax()

◆ SCIPincludeRelaxBasic()

◆ SCIPsetRelaxCopy()

◆ SCIPsetRelaxFree()

◆ SCIPsetRelaxInit()

◆ SCIPsetRelaxExit()

◆ SCIPsetRelaxInitsol()

◆ SCIPsetRelaxExitsol()

◆ SCIPfindRelax()

◆ SCIPgetRelaxs()

◆ SCIPgetNRelaxs()

◆ SCIPsetRelaxPriority()