Detailed Description

methods for the management of NLP solver interfaces

Macros
#define	SCIPsolveNlpi(scip, nlpi, ...)

Functions
	SCIP_DECL_SORTPTRCOMP (SCIPnlpiComp)

SCIP_NLPIDATA *	SCIPnlpiGetData (SCIP_NLPI *nlpi)

const char *	SCIPnlpiGetName (SCIP_NLPI *nlpi)

const char *	SCIPnlpiGetDesc (SCIP_NLPI *nlpi)

int	SCIPnlpiGetPriority (SCIP_NLPI *nlpi)

SCIP_RETCODE	SCIPincludeNlpi (SCIP scip, const char name, const char description, int priority, SCIP_DECL_NLPICOPY((nlpicopy)), SCIP_DECL_NLPIFREE((nlpifree)), SCIP_DECL_NLPIGETSOLVERPOINTER((nlpigetsolverpointer)), SCIP_DECL_NLPICREATEPROBLEM((nlpicreateproblem)), SCIP_DECL_NLPIFREEPROBLEM((nlpifreeproblem)), SCIP_DECL_NLPIGETPROBLEMPOINTER((nlpigetproblempointer)), SCIP_DECL_NLPIADDVARS((nlpiaddvars)), SCIP_DECL_NLPIADDCONSTRAINTS((nlpiaddconstraints)), SCIP_DECL_NLPISETOBJECTIVE((nlpisetobjective)), SCIP_DECL_NLPICHGVARBOUNDS((nlpichgvarbounds)), SCIP_DECL_NLPICHGCONSSIDES((nlpichgconssides)), SCIP_DECL_NLPIDELVARSET((nlpidelvarset)), SCIP_DECL_NLPIDELCONSSET((nlpidelconsset)), SCIP_DECL_NLPICHGLINEARCOEFS((nlpichglinearcoefs)), SCIP_DECL_NLPICHGEXPR((nlpichgexpr)), SCIP_DECL_NLPICHGOBJCONSTANT((nlpichgobjconstant)), SCIP_DECL_NLPISETINITIALGUESS((nlpisetinitialguess)), SCIP_DECL_NLPISOLVE((nlpisolve)), SCIP_DECL_NLPIGETSOLSTAT((nlpigetsolstat)), SCIP_DECL_NLPIGETTERMSTAT((nlpigettermstat)), SCIP_DECL_NLPIGETSOLUTION((nlpigetsolution)), SCIP_DECL_NLPIGETSTATISTICS((nlpigetstatistics)), SCIP_NLPIDATA nlpidata)

SCIP_NLPI *	SCIPfindNlpi (SCIP scip, const char name)

SCIP_NLPI **	SCIPgetNlpis (SCIP *scip)

int	SCIPgetNNlpis (SCIP *scip)

SCIP_RETCODE	SCIPsetNlpiPriority (SCIP scip, SCIP_NLPI nlpi, int priority)

	SCIP_DECL_NLPIGETSOLVERPOINTER (SCIPgetNlpiSolverPointer)

	SCIP_DECL_NLPICREATEPROBLEM (SCIPcreateNlpiProblem)

	SCIP_DECL_NLPIFREEPROBLEM (SCIPfreeNlpiProblem)

	SCIP_DECL_NLPIGETPROBLEMPOINTER (SCIPgetNlpiProblemPointer)

	SCIP_DECL_NLPIADDVARS (SCIPaddNlpiVars)

	SCIP_DECL_NLPIADDCONSTRAINTS (SCIPaddNlpiConstraints)

	SCIP_DECL_NLPISETOBJECTIVE (SCIPsetNlpiObjective)

	SCIP_DECL_NLPICHGVARBOUNDS (SCIPchgNlpiVarBounds)

	SCIP_DECL_NLPICHGCONSSIDES (SCIPchgNlpiConsSides)

	SCIP_DECL_NLPIDELVARSET (SCIPdelNlpiVarSet)

	SCIP_DECL_NLPIDELCONSSET (SCIPdelNlpiConsSet)

	SCIP_DECL_NLPICHGLINEARCOEFS (SCIPchgNlpiLinearCoefs)

	SCIP_DECL_NLPICHGEXPR (SCIPchgNlpiExpr)

	SCIP_DECL_NLPICHGOBJCONSTANT (SCIPchgNlpiObjConstant)

	SCIP_DECL_NLPISETINITIALGUESS (SCIPsetNlpiInitialGuess)

	SCIP_DECL_NLPISOLVE (SCIPsolveNlpiParam)

	SCIP_DECL_NLPIGETSOLSTAT (SCIPgetNlpiSolstat)

	SCIP_DECL_NLPIGETTERMSTAT (SCIPgetNlpiTermstat)

	SCIP_DECL_NLPIGETSOLUTION (SCIPgetNlpiSolution)

	SCIP_DECL_NLPIGETSTATISTICS (SCIPgetNlpiStatistics)

Statistics
int	SCIPnlpiGetNProblems (SCIP_NLPI *nlpi)

SCIP_Real	SCIPnlpiGetProblemTime (SCIP_NLPI *nlpi)

int	SCIPnlpiGetNSolves (SCIP_NLPI *nlpi)

SCIP_Real	SCIPnlpiGetSolveTime (SCIP_NLPI *nlpi)

SCIP_Real	SCIPnlpiGetEvalTime (SCIP_NLPI *nlpi)

SCIP_Longint	SCIPnlpiGetNIterations (SCIP_NLPI *nlpi)

int	SCIPnlpiGetNTermStat (SCIP_NLPI *nlpi, SCIP_NLPTERMSTAT termstatus)

int	SCIPnlpiGetNSolStat (SCIP_NLPI *nlpi, SCIP_NLPSOLSTAT solstatus)

void	SCIPnlpiMergeStatistics (SCIP_NLPI targetnlpi, SCIP_NLPI sourcenlpi, SCIP_Bool reset)

Convenience methods to setup and update an NLPI problem using NLROWS
These methods can be used, for example, to create a NLPI problem that contains only the convex rows of the SCIP NLP relaxation.
SCIP_RETCODE	SCIPcreateNlpiProblemFromNlRows (SCIP scip, SCIP_NLPI nlpi, SCIP_NLPIPROBLEM *nlpiprob, const char name, SCIP_NLROW *nlrows, int nnlrows, SCIP_HASHMAP var2idx, SCIP_HASHMAP nlrow2idx, SCIP_Real nlscore, SCIP_Real cutoffbound, SCIP_Bool setobj, SCIP_Bool onlyconvex)

SCIP_RETCODE	SCIPupdateNlpiProblem (SCIP scip, SCIP_NLPI nlpi, SCIP_NLPIPROBLEM nlpiprob, SCIP_HASHMAP var2nlpiidx, SCIP_VAR **nlpivars, int nlpinvars, SCIP_Real cutoffbound)

SCIP_RETCODE	SCIPaddNlpiProblemRows (SCIP scip, SCIP_NLPI nlpi, SCIP_NLPIPROBLEM nlpiprob, SCIP_HASHMAP var2idx, SCIP_ROW **rows, int nrows)

SCIP_RETCODE	SCIPaddNlpiProblemNlRows (SCIP scip, SCIP_NLPI nlpi, SCIP_NLPIPROBLEM nlpiprob, SCIP_HASHMAP var2idx, SCIP_NLROW **nlrows, int nnlrows)

Macro Definition Documentation

◆ SCIPsolveNlpi

#define SCIPsolveNlpi	(	scip,
		nlpi,
		...
	)

Value:

SCIPsolveNlpiParam(scip, nlpi, SCIP_VARARGS_FIRST((__VA_ARGS__, ignored)), \

(SCIP_NLPPARAM){ SCIP_NLPPARAM_DEFAULT_INITS(scip), SCIP_VARARGS_REST(__VA_ARGS__, .caller = __FILE__) })

SCIP_VARARGS_FIRST

#define SCIP_VARARGS_FIRST(args)

Definition: def.h:81

SCIP_VARARGS_REST

#define SCIP_VARARGS_REST(firstarg,...)

Definition: def.h:84

scip

Definition: objbenders.h:44

SCIP_NlpParam

Definition: type_nlpi.h:67

SCIP_NLPPARAM_DEFAULT_INITS

#define SCIP_NLPPARAM_DEFAULT_INITS(scip)

Definition: type_nlpi.h:102

try to solve NLP with non-default parameters given as optional arguments

Typical use is

SCIP_CALL( SCIPsolveNlpi(scip, nlpi, nlpiproblem) );

to solve with default parameters. Additionally, one or several values of SCIP_NLPPARAM can be set:

SCIP_CALL( SCIPsolveNlpi(scip, nlpi, nlpiproblem, .iterlimit = 42, .verblevel = 1) );  //lint !e666

Definition at line 208 of file scip_nlpi.h.

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP()

SCIP_DECL_SORTPTRCOMP ( SCIPnlpiComp )

compares two NLPIs w.r.t. their priority

Definition at line 47 of file nlpi.c.

◆ SCIPnlpiGetData()

SCIP_NLPIDATA * SCIPnlpiGetData ( SCIP_NLPI * nlpi )

gets data of an NLPI

Parameters

nlpi	NLP interface structure

Definition at line 712 of file nlpi.c.

References SCIP_Nlpi::nlpidata, and NULL.

Referenced by handleNlpParam(), SCIP_DECL_NLPIADDCONSTRAINTS(), SCIP_DECL_NLPIADDVARS(), SCIP_DECL_NLPICHGCONSSIDES(), SCIP_DECL_NLPICHGEXPR(), SCIP_DECL_NLPICHGLINEARCOEFS(), SCIP_DECL_NLPICHGOBJCONSTANT(), SCIP_DECL_NLPICHGVARBOUNDS(), SCIP_DECL_NLPICOPY(), SCIP_DECL_NLPICREATEPROBLEM(), SCIP_DECL_NLPIDELCONSSET(), SCIP_DECL_NLPIDELVARSET(), SCIP_DECL_NLPIFREEPROBLEM(), SCIP_DECL_NLPIGETSOLSTAT(), SCIP_DECL_NLPIGETSOLUTION(), SCIP_DECL_NLPIGETSTATISTICS(), SCIP_DECL_NLPIGETTERMSTAT(), SCIP_DECL_NLPISETINITIALGUESS(), SCIP_DECL_NLPISETOBJECTIVE(), and SCIP_DECL_NLPISOLVE().

◆ SCIPnlpiGetName()

const char * SCIPnlpiGetName ( SCIP_NLPI * nlpi )

gets NLP solver name

Parameters

nlpi	NLP interface structure

Definition at line 722 of file nlpi.c.

References SCIP_Nlpi::name, and NULL.

Referenced by computeInteriorPoint(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_NLPISOLVE(), SCIPincludeDialogDefaultFix(), SCIPincludeDialogDefaultSet(), SCIPmergeNLPIStatistics(), and SCIPprintNLPIStatistics().

◆ SCIPnlpiGetDesc()

const char * SCIPnlpiGetDesc ( SCIP_NLPI * nlpi )

gets NLP solver description

Parameters

nlpi	NLP interface structure

Definition at line 732 of file nlpi.c.

References SCIP_Nlpi::description, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC(), SCIPincludeDialogDefaultFix(), and SCIPincludeDialogDefaultSet().

◆ SCIPnlpiGetPriority()

int SCIPnlpiGetPriority ( SCIP_NLPI * nlpi )

gets NLP solver priority

Parameters

nlpi	NLP interface structure

Definition at line 742 of file nlpi.c.

References NULL, and SCIP_Nlpi::priority.

Referenced by SCIP_DECL_DIALOGEXEC(), and SCIPincludeNlpi().

◆ SCIPnlpiGetNProblems()

int SCIPnlpiGetNProblems ( SCIP_NLPI * nlpi )

gives number of problems created for NLP solver so far

Parameters

nlpi	NLP interface structure

Definition at line 756 of file nlpi.c.

References SCIP_Nlpi::nproblems, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetProblemTime()

SCIP_Real SCIPnlpiGetProblemTime ( SCIP_NLPI * nlpi )

gives total time spend in problem creation/modification/freeing

Parameters

nlpi	NLP interface structure

Definition at line 765 of file nlpi.c.

References NULL, SCIP_Nlpi::problemtime, and SCIPclockGetTime().

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetNSolves()

int SCIPnlpiGetNSolves ( SCIP_NLPI * nlpi )

total number of NLP solves so far

Parameters

nlpi	NLP interface structure

Definition at line 774 of file nlpi.c.

References SCIP_Nlpi::nsolves, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetSolveTime()

SCIP_Real SCIPnlpiGetSolveTime ( SCIP_NLPI * nlpi )

gives total time spend in NLP solves (as reported by solver)

Parameters

nlpi	NLP interface structure

Definition at line 783 of file nlpi.c.

References NULL, and SCIP_Nlpi::solvetime.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetEvalTime()

SCIP_Real SCIPnlpiGetEvalTime ( SCIP_NLPI * nlpi )

gives total time spend in function evaluation during NLP solves

If parameter timing/nlpieval is off (the default), depending on the NLP solver, this may just return 0.

Parameters

nlpi	NLP interface structure

Definition at line 795 of file nlpi.c.

References SCIP_Nlpi::evaltime, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetNIterations()

SCIP_Longint SCIPnlpiGetNIterations ( SCIP_NLPI * nlpi )

gives total number of iterations spend by NLP solver so far

Parameters

nlpi	NLP interface structure

Definition at line 804 of file nlpi.c.

References SCIP_Nlpi::niter, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetNTermStat()

int SCIPnlpiGetNTermStat	(	SCIP_NLPI *	nlpi,
		SCIP_NLPTERMSTAT	termstatus
	)

gives number of times a solve ended with a specific termination status

Parameters

nlpi	NLP interface structure
termstatus	the termination status to query for

Definition at line 813 of file nlpi.c.

References SCIP_Nlpi::ntermstat, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiGetNSolStat()

int SCIPnlpiGetNSolStat	(	SCIP_NLPI *	nlpi,
		SCIP_NLPSOLSTAT	solstatus
	)

gives number of times a solve ended with a specific solution status

Parameters

nlpi	NLP interface structure
solstatus	the solution status to query for

Definition at line 823 of file nlpi.c.

References SCIP_Nlpi::nsolstat, and NULL.

Referenced by SCIPprintNLPIStatistics().

◆ SCIPnlpiMergeStatistics()

void SCIPnlpiMergeStatistics	(	SCIP_NLPI *	targetnlpi,
		SCIP_NLPI *	sourcenlpi,
		SCIP_Bool	reset
	)

adds statistics from one NLPI to another

Parameters

targetnlpi	NLP interface where to add statistics
sourcenlpi	NLP interface from which to add statistics
reset	whether to reset statistics in sourcescip

Definition at line 833 of file nlpi.c.

References SCIP_Nlpi::evaltime, SCIP_Nlpi::niter, SCIP_Nlpi::nproblems, SCIP_Nlpi::nsolstat, SCIP_Nlpi::nsolves, SCIP_Nlpi::ntermstat, NULL, SCIP_Nlpi::problemtime, SCIP_NLPSOLSTAT_GLOBOPT, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_NLPTERMSTAT_OKAY, SCIP_NLPTERMSTAT_OTHER, SCIPclockGetTime(), SCIPclockReset(), SCIPclockSetTime(), and SCIP_Nlpi::solvetime.

Referenced by SCIPmergeNLPIStatistics().

◆ SCIPincludeNlpi()

SCIP_RETCODE SCIPincludeNlpi	(	SCIP *	scip,
		const char *	name,
		const char *	description,
		int	priority,
		SCIP_DECL_NLPICOPY((*nlpicopy))	,
		SCIP_DECL_NLPIFREE((*nlpifree))	,
		SCIP_DECL_NLPIGETSOLVERPOINTER((*nlpigetsolverpointer))	,
		SCIP_DECL_NLPICREATEPROBLEM((*nlpicreateproblem))	,
		SCIP_DECL_NLPIFREEPROBLEM((*nlpifreeproblem))	,
		SCIP_DECL_NLPIGETPROBLEMPOINTER((*nlpigetproblempointer))	,
		SCIP_DECL_NLPIADDVARS((*nlpiaddvars))	,
		SCIP_DECL_NLPIADDCONSTRAINTS((*nlpiaddconstraints))	,
		SCIP_DECL_NLPISETOBJECTIVE((*nlpisetobjective))	,
		SCIP_DECL_NLPICHGVARBOUNDS((*nlpichgvarbounds))	,
		SCIP_DECL_NLPICHGCONSSIDES((*nlpichgconssides))	,
		SCIP_DECL_NLPIDELVARSET((*nlpidelvarset))	,
		SCIP_DECL_NLPIDELCONSSET((*nlpidelconsset))	,
		SCIP_DECL_NLPICHGLINEARCOEFS((*nlpichglinearcoefs))	,
		SCIP_DECL_NLPICHGEXPR((*nlpichgexpr))	,
		SCIP_DECL_NLPICHGOBJCONSTANT((*nlpichgobjconstant))	,
		SCIP_DECL_NLPISETINITIALGUESS((*nlpisetinitialguess))	,
		SCIP_DECL_NLPISOLVE((*nlpisolve))	,
		SCIP_DECL_NLPIGETSOLSTAT((*nlpigetsolstat))	,
		SCIP_DECL_NLPIGETTERMSTAT((*nlpigettermstat))	,
		SCIP_DECL_NLPIGETSOLUTION((*nlpigetsolution))	,
		SCIP_DECL_NLPIGETSTATISTICS((*nlpigetstatistics))	,
		SCIP_NLPIDATA *	nlpidata
	)

creates an NLPI and includes it into SCIP

Parameters

scip	SCIP data structure
name	name of NLP interface
description	description of NLP interface
priority	priority of NLP interface
nlpidata	NLP interface local data

Definition at line 108 of file scip_nlpi.c.

References FALSE, NULL, paramname, SCIP_CALL, SCIP_INVALIDDATA, SCIP_MAXSTRLEN, SCIP_OKAY, SCIPaddIntParam(), SCIPcheckStage(), SCIPerrorMessage, SCIPfindNlpi(), SCIPnlpiCreate(), SCIPnlpiGetPriority(), SCIPsetIncludeNlpi(), SCIPsnprintf(), and TRUE.

Referenced by SCIPincludeNlpSolverAll(), SCIPincludeNlpSolverFilterSQP(), SCIPincludeNlpSolverIpopt(), and SCIPincludeNlpSolverWorhp().

◆ SCIPfindNlpi()

SCIP_NLPI * SCIPfindNlpi	(	SCIP *	scip,
		const char *	name
	)

returns the NLPI of the given name, or NULL if not existing

Parameters

scip	SCIP data structure
name	name of NLPI

Definition at line 174 of file scip_nlpi.c.

References NULL, and SCIPsetFindNlpi().

Referenced by SCIPincludeNlpi().

◆ SCIPgetNlpis()

SCIP_NLPI ** SCIPgetNlpis ( SCIP * scip )

returns the array of currently available NLPIs (sorted by priority)

Parameters

scip	SCIP data structure

Definition at line 187 of file scip_nlpi.c.

References NULL, and SCIPsetSortNlpis().

Referenced by applyNlobbt(), computeInteriorPoint(), createAuxiliaryNonlinearSubproblem(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_HEURINITSOL(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPincludeDialogDefaultFix(), SCIPincludeDialogDefaultSet(), and SCIPincludeNlpSolverAll().

◆ SCIPgetNNlpis()

int SCIPgetNNlpis ( SCIP * scip )

returns the number of currently available NLPIs

Parameters

scip	SCIP data structure

Definition at line 200 of file scip_nlpi.c.

References NULL.

Referenced by applyNlobbt(), checkSubproblemConvexity(), computeInteriorPoint(), createSubSCIP(), generateAndApplyBendersCuts(), runHeuristic(), SCIP_DECL_BENDERSCUTEXEC(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEURINITSOL(), SCIP_DECL_PROPEXEC(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPapplyHeurDualval(), SCIPapplyUndercover(), SCIPbendersComputeSubproblemLowerbound(), SCIPbendersSolSlackVarsActive(), SCIPbendersSolveSubproblemLP(), SCIPgenerateAndApplyBendersOptCut(), SCIPincludeDialogDefaultFix(), SCIPincludeDialogDefaultSet(), and SCIPincludeNlpSolverAll().

◆ SCIPsetNlpiPriority()

SCIP_RETCODE SCIPsetNlpiPriority	(	SCIP *	scip,
		SCIP_NLPI *	nlpi,
		int	priority
	)

sets the priority of an NLPI

Parameters

scip	SCIP data structure
nlpi	NLPI
priority	new priority of the NLPI

Definition at line 211 of file scip_nlpi.c.

References NULL, SCIP_OKAY, and SCIPsetSetPriorityNlpi().

Referenced by SCIP_DECL_PARAMCHGD().

◆ SCIP_DECL_NLPIGETSOLVERPOINTER()

SCIP_DECL_NLPIGETSOLVERPOINTER ( SCIPgetNlpiSolverPointer )

gets internal pointer to NLP solver

Depending on the solver interface, a solver pointer may exist for every NLP problem instance. For this case, a NLPI problem can be passed in as well.

gets internal pointer to NLP solver

Definition at line 226 of file scip_nlpi.c.

References NULL, and SCIPnlpiGetSolverPointer().

◆ SCIP_DECL_NLPICREATEPROBLEM()

SCIP_DECL_NLPICREATEPROBLEM ( SCIPcreateNlpiProblem )

creates an empty problem instance

Definition at line 234 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiCreateProblem().

◆ SCIP_DECL_NLPIFREEPROBLEM()

SCIP_DECL_NLPIFREEPROBLEM ( SCIPfreeNlpiProblem )

frees a problem instance

Definition at line 244 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiFreeProblem().

◆ SCIP_DECL_NLPIGETPROBLEMPOINTER()

SCIP_DECL_NLPIGETPROBLEMPOINTER ( SCIPgetNlpiProblemPointer )

gets internal pointer to solver-internal problem instance

Definition at line 254 of file scip_nlpi.c.

References NULL, and SCIPnlpiGetProblemPointer().

◆ SCIP_DECL_NLPIADDVARS()

SCIP_DECL_NLPIADDVARS ( SCIPaddNlpiVars )

add variables to nlpi

Definition at line 262 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiAddVars().

◆ SCIP_DECL_NLPIADDCONSTRAINTS()

SCIP_DECL_NLPIADDCONSTRAINTS ( SCIPaddNlpiConstraints )

add constraints to nlpi

Definition at line 272 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiAddConstraints().

◆ SCIP_DECL_NLPISETOBJECTIVE()

SCIP_DECL_NLPISETOBJECTIVE ( SCIPsetNlpiObjective )

sets or overwrites objective, a minimization problem is expected

Definition at line 282 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiSetObjective().

◆ SCIP_DECL_NLPICHGVARBOUNDS()

SCIP_DECL_NLPICHGVARBOUNDS ( SCIPchgNlpiVarBounds )

change variable bounds

Definition at line 292 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiChgVarBounds().

◆ SCIP_DECL_NLPICHGCONSSIDES()

SCIP_DECL_NLPICHGCONSSIDES ( SCIPchgNlpiConsSides )

change constraint sides

Definition at line 302 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiChgConsSides().

◆ SCIP_DECL_NLPIDELVARSET()

SCIP_DECL_NLPIDELVARSET ( SCIPdelNlpiVarSet )

delete a set of variables

Definition at line 312 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiDelVarSet().

◆ SCIP_DECL_NLPIDELCONSSET()

SCIP_DECL_NLPIDELCONSSET ( SCIPdelNlpiConsSet )

delete a set of constraints

Definition at line 322 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiDelConsSet().

◆ SCIP_DECL_NLPICHGLINEARCOEFS()

SCIP_DECL_NLPICHGLINEARCOEFS ( SCIPchgNlpiLinearCoefs )

changes or adds linear coefficients in a constraint or objective

Definition at line 332 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiChgLinearCoefs().

◆ SCIP_DECL_NLPICHGEXPR()

SCIP_DECL_NLPICHGEXPR ( SCIPchgNlpiExpr )

change the expression in the nonlinear part

Definition at line 342 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiChgExpr().

◆ SCIP_DECL_NLPICHGOBJCONSTANT()

SCIP_DECL_NLPICHGOBJCONSTANT ( SCIPchgNlpiObjConstant )

change the constant offset in the objective

Definition at line 352 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiChgObjConstant().

◆ SCIP_DECL_NLPISETINITIALGUESS()

SCIP_DECL_NLPISETINITIALGUESS ( SCIPsetNlpiInitialGuess )

sets initial guess

Definition at line 362 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiSetInitialGuess().

◆ SCIP_DECL_NLPISOLVE()

SCIP_DECL_NLPISOLVE ( SCIPsolveNlpiParam )

try to solve NLP with all parameters given as SCIP_NLPPARAM struct

Typical use is

SCIP_NLPPARAM nlparam = { SCIP_NLPPARAM_DEFAULT(scip); }
nlpparam.iterlimit = 42;
SCIP_CALL( SCIPsolveNlpiParam(scip, nlpi, nlpiproblem, nlpparam) );

or, in "one" line:

SCIP_CALL( SCIPsolveNlpiParam(scip, nlpi, nlpiproblem,
   (SCIP_NLPPARAM){ SCIP_NLPPARAM_DEFAULT(scip), .iterlimit = 42 }) );

To get the latter, also SCIPsolveNlpi can be used.

try to solve NLP with all parameters given as SCIP_NLPPARAM struct

Typical use is

SCIP_NLPPARAM nlparam = { SCIP_NLPPARAM_DEFAULT(scip); }
nlpparam.iterlim = 42;
SCIP_CALL( SCIPsolveNlpiParam(scip, nlpi, nlpiproblem, nlpparam) );

or, in "one" line:

SCIP_CALL( SCIPsolveNlpiParam(scip, nlpi, nlpiproblem,
   (SCIP_NLPPARAM){ SCIP_NLPPARAM_DEFAULT(scip), .iterlimit = 42 }) );

To get the latter, also SCIPsolveNlpi can be used.

Definition at line 386 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiSolve().

◆ SCIP_DECL_NLPIGETSOLSTAT()

SCIP_DECL_NLPIGETSOLSTAT ( SCIPgetNlpiSolstat )

gives solution status

Definition at line 401 of file scip_nlpi.c.

References NULL, and SCIPnlpiGetSolstat().

◆ SCIP_DECL_NLPIGETTERMSTAT()

SCIP_DECL_NLPIGETTERMSTAT ( SCIPgetNlpiTermstat )

gives termination reason

Definition at line 409 of file scip_nlpi.c.

References NULL, and SCIPnlpiGetTermstat().

◆ SCIP_DECL_NLPIGETSOLUTION()

SCIP_DECL_NLPIGETSOLUTION ( SCIPgetNlpiSolution )

gives primal and dual solution for a ranged constraint, the dual variable is positive if the right hand side is active and negative if the left hand side is active

Definition at line 419 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiGetSolution().

◆ SCIP_DECL_NLPIGETSTATISTICS()

SCIP_DECL_NLPIGETSTATISTICS ( SCIPgetNlpiStatistics )

gives solve statistics

Definition at line 429 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpiGetStatistics().

◆ SCIPcreateNlpiProblemFromNlRows()

SCIP_RETCODE SCIPcreateNlpiProblemFromNlRows	(	SCIP *	scip,
		SCIP_NLPI *	nlpi,
		SCIP_NLPIPROBLEM **	nlpiprob,
		const char *	name,
		SCIP_NLROW **	nlrows,
		int	nnlrows,
		SCIP_HASHMAP *	var2idx,
		SCIP_HASHMAP *	nlrow2idx,
		SCIP_Real *	nlscore,
		SCIP_Real	cutoffbound,
		SCIP_Bool	setobj,
		SCIP_Bool	onlyconvex
	)

creates a NLPI problem from given nonlinear rows

The function computes for each variable the number of non-linear occurrences and stores it in the nlscore array.

Note: the first row corresponds always to the cutoff row (even if cutoffbound is SCIPinfinity(scip))

Parameters

scip	SCIP data structure
nlpi	interface to NLP solver
nlpiprob	buffer to store pointer to created nlpi problem
name	name to give to problem
nlrows	nonlinear rows
nnlrows	number of nonlinear rows
var2idx	empty hash map to store mapping between variables and indices in nlpiprob
nlrow2idx	empty hash map to store mapping between variables and indices in nlpiprob, can be NULL
nlscore	array to store the score of each nonlinear variable (NULL if not needed)
cutoffbound	cutoff bound
setobj	whether the objective function should be set to one of the SCIP problem
onlyconvex	filter only for convex constraints

Definition at line 444 of file scip_nlpi.c.

References BMSclearMemoryArray, FALSE, NULL, SCIP_Bool, SCIP_CALL, SCIP_EXPRCURV_CONCAVE, SCIP_EXPRCURV_CONVEX, SCIP_EXPRITER_DFS, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPcreateExpriter(), SCIPdebugMsg, SCIPduplicateExpr(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPfreeBufferArray, SCIPfreeExpriter(), SCIPgetIndexExprVaridx(), SCIPgetNVars(), SCIPgetVars(), SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPhashmapInsertInt(), SCIPinfinity(), SCIPisExprVaridx(), SCIPisInfinity(), SCIPisZero(), SCIPnlpiCreateProblem(), SCIPnlrowGetConstant(), SCIPnlrowGetCurvature(), SCIPnlrowGetExpr(), SCIPnlrowGetLhs(), SCIPnlrowGetLinearCoefs(), SCIPnlrowGetLinearVars(), SCIPnlrowGetName(), SCIPnlrowGetNLinearVars(), SCIPnlrowGetRhs(), SCIPreleaseExpr(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetUbLocal(), and TRUE.

Referenced by applyNlobbt(), computeInteriorPoint(), createAuxiliaryNonlinearSubproblem(), createNLP(), SCIP_DECL_RELAXEXEC(), and SCIP_DECL_SEPAEXECLP().

◆ SCIPupdateNlpiProblem()

SCIP_RETCODE SCIPupdateNlpiProblem	(	SCIP *	scip,
		SCIP_NLPI *	nlpi,
		SCIP_NLPIPROBLEM *	nlpiprob,
		SCIP_HASHMAP *	var2nlpiidx,
		SCIP_VAR **	nlpivars,
		int	nlpinvars,
		SCIP_Real	cutoffbound
	)

updates variable bounds and the cutoff row in a NLPI problem

The NLPI problem must have been setup by SCIPcreateNlpiProblemFromNlRows().

Parameters

scip	SCIP data structure
nlpi	interface to NLP solver
nlpiprob	nlpi problem representing the convex NLP relaxation
var2nlpiidx	mapping between variables and nlpi indices
nlpivars	array containing all variables of the nlpi
nlpinvars	total number of nlpi variables
cutoffbound	new cutoff bound

Definition at line 730 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPdebugMsg, SCIPfreeBufferArray, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPinfinity(), SCIPvarGetLbLocal(), and SCIPvarGetUbLocal().

Referenced by applyNlobbt(), SCIP_DECL_SEPAEXECLP(), and updateAuxiliaryNonlinearSubproblem().

◆ SCIPaddNlpiProblemRows()

SCIP_RETCODE SCIPaddNlpiProblemRows	(	SCIP *	scip,
		SCIP_NLPI *	nlpi,
		SCIP_NLPIPROBLEM *	nlpiprob,
		SCIP_HASHMAP *	var2idx,
		SCIP_ROW **	rows,
		int	nrows
	)

adds SCIP_ROWs to a NLPI problem

Parameters

scip	SCIP data structure
nlpi	interface to NLP solver
nlpiprob	nlpi problem
var2idx	empty hash map to store mapping between variables and indices in nlpiprob
rows	rows to add
nrows	number of rows to add

Definition at line 782 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPcolGetVar(), SCIPdebugMsg, SCIPfreeBufferArray, SCIPgetNVars(), SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIProwGetCols(), SCIProwGetConstant(), SCIProwGetLhs(), SCIProwGetName(), SCIProwGetNNonz(), SCIProwGetRhs(), and SCIProwGetVals().

Referenced by applyNlobbt(), computeInteriorPoint(), SCIP_DECL_RELAXEXEC(), and SCIP_DECL_SEPAEXECLP().

◆ SCIPaddNlpiProblemNlRows()

SCIP_RETCODE SCIPaddNlpiProblemNlRows	(	SCIP *	scip,
		SCIP_NLPI *	nlpi,
		SCIP_NLPIPROBLEM *	nlpiprob,
		SCIP_HASHMAP *	var2idx,
		SCIP_NLROW **	nlrows,
		int	nnlrows
	)

adds SCIP_NLROWs to a NLPI problem

Parameters

scip	SCIP data structure
nlpi	interface to NLP solver
nlpiprob	nlpi problem
var2idx	empty hash map to store mapping between variables and indices in nlpiprob
nlrows	rows to add
nnlrows	number of rows to add

Definition at line 865 of file scip_nlpi.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPdebugMsg, SCIPduplicateExpr(), SCIPfreeBufferArray, SCIPfreeBufferArrayNull, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPinfinity(), SCIPisInfinity(), SCIPnlrowGetConstant(), SCIPnlrowGetExpr(), SCIPnlrowGetLhs(), SCIPnlrowGetLinearCoefs(), SCIPnlrowGetLinearVars(), SCIPnlrowGetName(), SCIPnlrowGetNLinearVars(), SCIPnlrowGetRhs(), and SCIPreleaseExpr().

Referenced by addRegularScholtes().

SCIP

Detailed Description

Macros

Functions

Statistics

Convenience methods to setup and update an NLPI problem using NLROWS

Macro Definition Documentation

◆ SCIPsolveNlpi

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP()

◆ SCIPnlpiGetData()

◆ SCIPnlpiGetName()

◆ SCIPnlpiGetDesc()

◆ SCIPnlpiGetPriority()

◆ SCIPnlpiGetNProblems()

◆ SCIPnlpiGetProblemTime()

◆ SCIPnlpiGetNSolves()

◆ SCIPnlpiGetSolveTime()

◆ SCIPnlpiGetEvalTime()

◆ SCIPnlpiGetNIterations()

◆ SCIPnlpiGetNTermStat()

◆ SCIPnlpiGetNSolStat()

◆ SCIPnlpiMergeStatistics()

◆ SCIPincludeNlpi()

◆ SCIPfindNlpi()

◆ SCIPgetNlpis()

◆ SCIPgetNNlpis()

◆ SCIPsetNlpiPriority()

◆ SCIP_DECL_NLPIGETSOLVERPOINTER()

◆ SCIP_DECL_NLPICREATEPROBLEM()

◆ SCIP_DECL_NLPIFREEPROBLEM()

◆ SCIP_DECL_NLPIGETPROBLEMPOINTER()

◆ SCIP_DECL_NLPIADDVARS()

◆ SCIP_DECL_NLPIADDCONSTRAINTS()

◆ SCIP_DECL_NLPISETOBJECTIVE()

◆ SCIP_DECL_NLPICHGVARBOUNDS()

◆ SCIP_DECL_NLPICHGCONSSIDES()

◆ SCIP_DECL_NLPIDELVARSET()

◆ SCIP_DECL_NLPIDELCONSSET()

◆ SCIP_DECL_NLPICHGLINEARCOEFS()

◆ SCIP_DECL_NLPICHGEXPR()

◆ SCIP_DECL_NLPICHGOBJCONSTANT()

◆ SCIP_DECL_NLPISETINITIALGUESS()

◆ SCIP_DECL_NLPISOLVE()

◆ SCIP_DECL_NLPIGETSOLSTAT()

◆ SCIP_DECL_NLPIGETTERMSTAT()

◆ SCIP_DECL_NLPIGETSOLUTION()

◆ SCIP_DECL_NLPIGETSTATISTICS()

◆ SCIPcreateNlpiProblemFromNlRows()

◆ SCIPupdateNlpiProblem()

◆ SCIPaddNlpiProblemRows()

◆ SCIPaddNlpiProblemNlRows()