Detailed Description

methods used by the majority of operations involving floating-point computations in SCIP

query the numerical tolerances of SCIP, as well as special values such as infinity.
change tolerances inside relaxations
epsilon-comparison methods for floating point numbers

Functions
SCIP_EXPORT SCIP_Real	SCIPepsilon (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPsumepsilon (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPfeastol (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPlpfeastol (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPdualfeastol (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPbarrierconvtol (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPcutoffbounddelta (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPrelaxfeastol (SCIP *scip)

SCIP_EXPORT SCIP_RETCODE	SCIPchgFeastol (SCIP *scip, SCIP_Real feastol)

SCIP_EXPORT SCIP_RETCODE	SCIPchgLpfeastol (SCIP *scip, SCIP_Real lpfeastol, SCIP_Bool printnewvalue)

SCIP_EXPORT SCIP_RETCODE	SCIPchgDualfeastol (SCIP *scip, SCIP_Real dualfeastol)

SCIP_EXPORT SCIP_RETCODE	SCIPchgBarrierconvtol (SCIP *scip, SCIP_Real barrierconvtol)

SCIP_EXPORT SCIP_Real	SCIPchgRelaxfeastol (SCIP *scip, SCIP_Real relaxfeastol)

SCIP_EXPORT void	SCIPmarkLimitChanged (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPinfinity (SCIP *scip)

SCIP_EXPORT SCIP_Real	SCIPgetHugeValue (SCIP *scip)

SCIP_EXPORT SCIP_Bool	SCIPisEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisInfinity (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisHugeValue (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisZero (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisPositive (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisNegative (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisScalingIntegral (SCIP *scip, SCIP_Real val, SCIP_Real scalar)

SCIP_EXPORT SCIP_Bool	SCIPisFracIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfloor (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPceil (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPround (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfrac (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisSumEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumZero (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisSumPositive (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisSumNegative (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisFeasEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisFeasLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisFeasLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisFeasGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisFeasGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisFeasZero (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisFeasPositive (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisFeasNegative (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisFeasIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisFeasFracIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfeasFloor (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfeasCeil (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfeasRound (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPfeasFrac (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasZero (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasPositive (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasNegative (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisDualfeasFracIntegral (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPdualfeasFloor (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPdualfeasCeil (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPdualfeasRound (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Real	SCIPdualfeasFrac (SCIP *scip, SCIP_Real val)

SCIP_EXPORT SCIP_Bool	SCIPisLbBetter (SCIP *scip, SCIP_Real newlb, SCIP_Real oldlb, SCIP_Real oldub)

SCIP_EXPORT SCIP_Bool	SCIPisUbBetter (SCIP *scip, SCIP_Real newub, SCIP_Real oldlb, SCIP_Real oldub)

SCIP_EXPORT SCIP_Bool	SCIPisRelEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisRelLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisRelLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisRelGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisRelGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumRelEQ (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumRelLT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumRelLE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumRelGT (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT SCIP_Bool	SCIPisSumRelGE (SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_EXPORT int	SCIPconvertRealToInt (SCIP *scip, SCIP_Real real)

SCIP_EXPORT SCIP_Longint	SCIPconvertRealToLongint (SCIP *scip, SCIP_Real real)

SCIP_EXPORT SCIP_Bool	SCIPisUpdateUnreliable (SCIP *scip, SCIP_Real newvalue, SCIP_Real oldvalue)

SCIP_EXPORT void	SCIPprintReal (SCIP scip, FILE file, SCIP_Real val, int width, int precision)

SCIP_EXPORT SCIP_Bool	SCIPparseReal (SCIP scip, const char str, SCIP_Real value, char *endptr)

Function Documentation

◆ SCIPepsilon()

SCIP_EXPORT SCIP_Real SCIPepsilon ( SCIP * scip )

returns value treated as zero

Returns: value treated as zero

Parameters

scip	SCIP data structure

Definition at line 130 of file scip_numerics.c.

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

Referenced by addCut(), checkRedundancySide(), computeFixingOrder(), computeMIREfficacy(), createCGCutCMIR(), createCGCutStrongCG(), cutsRoundMIR(), cutsRoundStrongCG(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), cutsTransformStrongCG(), cutTightenCoefs(), cutTightenCoefsQuad(), evaluateCutNumerics(), generateDisjCutSOS1(), generateLiftedFlowCoverCut(), getInteriority(), prettifyConss(), propagateBounds(), propagateBoundsCons(), reduce_boundPrune(), reduce_daSlackPrune(), reduce_daSlackPruneMw(), removeZeros(), removeZerosQuad(), rowprepCleanupSide(), SCIP_DECL_CONSEXITPRE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIPanalyzeDeductionsProbing(), SCIPcalcMIR(), SCIPcalcStrongCG(), SCIPcreateFiniteSolCopy(), SCIPcutGenerationHeuristicCMIR(), SCIPgetConcurrentGap(), SCIPincludePresolMILP(), SCIPseparateRelaxedKnapsack(), SCIPStpHeurTMRunLP(), solveSubNLP(), and transformNonIntegralRow().

◆ SCIPsumepsilon()

SCIP_EXPORT SCIP_Real SCIPsumepsilon ( SCIP * scip )

returns value treated as zero for sums of floating point values

Returns: value treated as zero for sums of floating point values

Parameters

scip	SCIP data structure

Definition at line 144 of file scip_numerics.c.

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

Referenced by addCut(), addLocalbranchingConstraintAndObjcutoff(), chooseVeclenVar(), createCGCutCMIR(), createCGCutStrongCG(), createNLP(), createSubproblem(), cutsTransformMIR(), cutTightenCoefs(), cutTightenCoefsQuad(), doSolveSubMIP(), evaluateCutNumerics(), generateDisjCutSOS1(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), getFSBResult(), getVectorOfWeights(), postprocessCut(), postprocessCutQuad(), SCIP_DECL_HEUREXEC(), SCIPaggrRowRemoveZeros(), SCIPapplyHeurSubNlp(), SCIPcalcFlowCover(), SCIPcalcMIR(), SCIPcalcStrongCG(), SCIPcutGenerationHeuristicCMIR(), SCIPincludeHeurMutation(), setupAndSolveSubscip(), setupAndSolveSubscipCrossover(), setupAndSolveSubscipMutation(), setupSubScip(), solveCoveringProblem(), transformNonIntegralRow(), wrapperDins(), and wrapperRins().

◆ SCIPfeastol()

SCIP_EXPORT SCIP_Real SCIPfeastol ( SCIP * scip )

returns feasibility tolerance for constraints

Returns: feasibility tolerance for constraints

Parameters

scip	SCIP data structure

Definition at line 158 of file scip_numerics.c.

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

Referenced by addLinearization(), adjustCutoffbound(), analyzeConflict(), analyzeConflictLowerbound(), analyzeConflictUpperbound(), analyzeGenVBoundConflict(), applyNlobbt(), calcScore(), checkCons(), computeInteriorPoint(), computeRelaxedLowerbound(), computeRelaxedUpperbound(), computeViolation(), computeViolations(), cutTightenCoefs(), cutTightenCoefsQuad(), displayRelevantStats(), doSeparation(), enforceConflictgraph(), enforceConstraint(), enforceViolatedFixedNonlinear(), fixAlmostFixedX(), generateCut(), getBranchingDecisionStrongbranchSOS1(), getNLPFracVars(), heurExec(), performStrongbranchSOS1(), postprocessCut(), postprocessCutQuad(), presolveTryAddLinearReform(), prettifyConss(), propagateBounds(), propagateBoundsCons(), propagateConstraintSides(), proposeBranchingPoint(), proposeFeasibleSolution(), readLIBSVM(), registerBranchingCandidates(), registerBranchingCandidatesCentrality(), registerBranchingCandidatesGap(), registerBranchingCandidatesViolation(), registerBranchingVariables(), registerLargeRelaxValueVariableForBranching(), replaceByLinearConstraints(), replaceViolatedByLinearConstraints(), resolvePropagation(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOPS(), SCIP_DECL_CONSSEPALP(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPapplyProximity(), SCIPincludePresolMILP(), SCIPprocessShellArguments(), SCIPsolveKnapsackApproximatelyLT(), SCIPvalidateSolve(), separateCuts(), separatePoint(), sepaSubtour(), setupAndSolveSubscip(), and solveSubNLP().

◆ SCIPlpfeastol()

SCIP_EXPORT SCIP_Real SCIPlpfeastol ( SCIP * scip )

returns primal feasibility tolerance of LP solver

Deprecated:: Please use SCIPgetLPFeastol().

Returns: primal feasibility tolerance of LP solver

returns primal feasibility tolerance of LP solver

Deprecated:: Please use SCIPgetLPFeastol().

Returns: primal feasibility tolerance of LP solver

Parameters

scip	SCIP data structure

Definition at line 174 of file scip_numerics.c.

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

◆ SCIPdualfeastol()

SCIP_EXPORT SCIP_Real SCIPdualfeastol ( SCIP * scip )

returns feasibility tolerance for reduced costs

Returns: feasibility tolerance for reduced costs

Parameters

scip	SCIP data structure

Definition at line 188 of file scip_numerics.c.

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

Referenced by computeInteriorPoint(), heurExec(), and separateCuts().

◆ SCIPbarrierconvtol()

SCIP_EXPORT SCIP_Real SCIPbarrierconvtol ( SCIP * scip )

returns convergence tolerance used in barrier algorithm

Returns: convergence tolerance used in barrier algorithm

Parameters

scip	SCIP data structure

Definition at line 202 of file scip_numerics.c.

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

◆ SCIPcutoffbounddelta()

SCIP_EXPORT SCIP_Real SCIPcutoffbounddelta ( SCIP * scip )

return the cutoff bound delta

Returns: cutoff bound data

Parameters

scip	SCIP data structure

Definition at line 216 of file scip_numerics.c.

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

Referenced by updateObjUpperbound().

◆ SCIPrelaxfeastol()

SCIP_EXPORT SCIP_Real SCIPrelaxfeastol ( SCIP * scip )

return the relaxation primal feasibility tolerance

See also: SCIPchgRelaxfeastol

Returns: relaxfeastol

Parameters

scip	SCIP data structure

Definition at line 231 of file scip_numerics.c.

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

◆ SCIPchgFeastol()

SCIP_EXPORT SCIP_RETCODE SCIPchgFeastol	(	SCIP *	scip,
		SCIP_Real	feastol
	)

sets the feasibility tolerance for constraints

Returns: SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.

Parameters

scip	SCIP data structure
feastol	new feasibility tolerance for constraints

Definition at line 246 of file scip_numerics.c.

References Scip::lp, NULL, SCIP_CALL, SCIP_OKAY, SCIPsetSetFeastol(), and Scip::set.

Referenced by displayRelevantStats(), SCIP_DECL_DIALOGEXEC(), and SCIPvalidateSolve().

◆ SCIPchgLpfeastol()

SCIP_EXPORT SCIP_RETCODE SCIPchgLpfeastol	(	SCIP *	scip,
		SCIP_Real	lpfeastol,
		SCIP_Bool	printnewvalue
	)

sets the primal feasibility tolerance of LP solver

Deprecated:: Please use SCIPsetLPFeastol().

Returns: SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.

sets the primal feasibility tolerance of LP solver

Deprecated:: Please use SCIPsetLPFeastol().

Returns: SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.

Parameters

scip	SCIP data structure
lpfeastol	new primal feasibility tolerance of LP solver
printnewvalue	should "numerics/lpfeastol = ..." be printed?

Definition at line 266 of file scip_numerics.c.

References NULL, SCIP_OKAY, SCIP_VERBLEVEL_HIGH, SCIPsetLPFeastol(), and SCIPverbMessage().

◆ SCIPchgDualfeastol()

SCIP_EXPORT SCIP_RETCODE SCIPchgDualfeastol	(	SCIP *	scip,
		SCIP_Real	dualfeastol
	)

sets the feasibility tolerance for reduced costs

Returns: SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.

Parameters

scip	SCIP data structure
dualfeastol	new feasibility tolerance for reduced costs

Definition at line 287 of file scip_numerics.c.

References FALSE, Scip::lp, SCIP_Lp::lpsolstat, NULL, SCIP_CALL, SCIP_LPSOLSTAT_NOTSOLVED, SCIP_OKAY, SCIPsetDualfeastol(), SCIPsetSetDualfeastol(), Scip::set, and SCIP_Lp::solved.

Referenced by calcGrowSize().

◆ SCIPchgBarrierconvtol()

SCIP_EXPORT SCIP_RETCODE SCIPchgBarrierconvtol	(	SCIP *	scip,
		SCIP_Real	barrierconvtol
	)

sets the convergence tolerance used in barrier algorithm

Returns: SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See SCIP_RETCODE for a complete list of error codes.

Parameters

scip	SCIP data structure
barrierconvtol	new convergence tolerance used in barrier algorithm

Definition at line 312 of file scip_numerics.c.

References FALSE, SCIP_Lp::lastlpalgo, Scip::lp, NULL, SCIP_CALL, SCIP_LPALGO_BARRIER, SCIP_LPALGO_BARRIERCROSSOVER, SCIP_OKAY, SCIPsetBarrierconvtol(), SCIPsetSetBarrierconvtol(), Scip::set, and SCIP_Lp::solved.

Referenced by calcGrowSize().

◆ SCIPchgRelaxfeastol()

SCIP_EXPORT SCIP_Real SCIPchgRelaxfeastol	(	SCIP *	scip,
		SCIP_Real	relaxfeastol
	)

sets the primal feasibility tolerance of relaxations

This tolerance value is used by the SCIP core and plugins to tighten then feasibility tolerance on relaxations (especially the LP relaxation) during a solve. It is set to SCIP_INVALID initially, which means that only the feasibility tolerance of the particular relaxation is taken into account. If set to a valid value, however, then this value should be used to reduce the primal feasibility tolerance of a relaxation (thus, use the minimum of relaxfeastol and the relaxations primal feastol).

Precondition

The value of relaxfeastol is reset to SCIP_INVALID when initializing the solve (INITSOL). Therefore, this method can only be called in one of the following stages of the SCIP solving process:

Returns: previous value of relaxfeastol

Parameters

scip	SCIP data structure
relaxfeastol	new primal feasibility tolerance of relaxations

Definition at line 345 of file scip_numerics.c.

References FALSE, NULL, SCIP_CALL_ABORT, SCIPcheckStage(), SCIPsetSetRelaxfeastol(), Scip::set, and TRUE.

◆ SCIPmarkLimitChanged()

SCIP_EXPORT void SCIPmarkLimitChanged ( SCIP * scip )

marks that some limit parameter was changed

Parameters

scip	SCIP data structure

Definition at line 359 of file scip_numerics.c.

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

Referenced by SCIP_DECL_PARAMCHGD().

◆ SCIPinfinity()

SCIP_EXPORT SCIP_Real SCIPinfinity ( SCIP * scip )

returns value treated as infinity

Parameters

scip	SCIP data structure

Definition at line 503 of file scip_numerics.c.

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

Referenced by ObjPricerVRP::add_tour_variable(), addAltLPConstraint(), addAuxiliaryVariablesToMaster(), addBranchingComplementaritiesSOS1(), addBranchingDecisionConss(), addCut(), addExtendedAsymmetricFormulation(), addIntervalGradientEstimator(), addKnapsackConstraints(), addLinearizationCuts(), addLocalBranchingConstraint(), addLogicOrConstraints(), addOrbisackCover(), addOrbisackInequality(), addPathCuts(), addRegularScholtes(), addRelaxation(), addRow(), addScenarioVarsAndConsToProb(), addSetppcConstraints(), addSlackVars(), addSubtourCuts(), addSymresackInequality(), addTourCuts(), addTrustRegionConstraints(), addUserEstimator(), addVariable(), aggregateConstraints(), aggregation(), applyCliqueFixings(), applyFixings(), applyHeur(), applyOptcumulativeFixings(), assignNextBin(), branchingResultDataCreate(), buildMod2Matrix(), calcActivityBounds(), calcMaxColActivity(), calcMinColActivity(), calcMinColActResidual(), calculateBounds(), calcVarBoundsDominated(), calcVarBoundsDominating(), checkCurvature(), checkCurvatureEasy(), checkCurvatureExpensive(), checkFixedVariables(), chgLhs(), chgRhs(), chooseFracVar(), chooseGuidedVar(), computeBoundsX(), computeBoundsZ(), computeCut(), computeFixingOrder(), computeInteriorPoint(), computeLiftingData(), polyscip::Polyscip::computeNondomPoints(), computeStandardNLPOptimalityCut(), computeSymmetryGroup(), computeVarsCoverSOS1(), computeViolation(), consdataCheckNonbinvar(), consdataComputePseudoActivity(), consdataCreate(), consdataCreateEmpty(), consdataGetActivity(), consdataRecomputeMaxActivityDelta(), consdataSort(), constructCompression(), CREATE_CONSTRAINT(), createAndAddLinearCons(), createAuxiliaryNonlinearSubproblem(), createCapacityRestriction(), createCapacityRestrictionIntvars(), createCGCutCMIR(), createCGCutDirect(), createCGCutStrongCG(), createConstraints(), createCoverCutsTimepoint(), createCoveringProblem(), createDegreeConstraints(), createDepthinfo(), createHopConstraint(), createKKTComplementarityBinary(), createKKTComplementarityBounds(), createKKTComplementarityLinear(), createKKTDualCons(), createMasterproblem(), createNAryBranch(), createNLP(), createNlRow(), createObjRow(), createOriginalproblem(), createPartitionCut(), createPatternVars(), createPrecedenceCons(), createPrizeConstraints(), createProbOnlyEdge(), createProbQP(), createProbSimplified(), createProbSimplifiedTest(), createRelaxation(), createRow(), createScenarioData(), createSubproblem(), createSubproblems(), createSubSCIP(), createSubscip(), createVarboundCons(), createVariables(), createVarUbs(), cut_add(), determineBoundForSNF(), disaggregate(), dualBoundStrengthening(), dualPresolve(), dualPresolving(), enforceCardinality(), enforceConflictgraph(), enforceViolatedFixedNonlinear(), evalLhs(), execmain(), execRelpscost(), extendToCover(), extractLinearValues(), findBestObjectiveValue(), findDominancePairs(), fixVariable(), forbidCover(), generate1ConvexIndefiniteUnderestimator(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternA(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternB(), generateAndApplyBendersCuts(), generateAndApplyBendersIntegerCuts(), generateAndApplyBendersNogoodCut(), generateBoundInequalityFromSOS1Nodes(), generateConvexConcaveEstimator(), generateConvexConcaveUnderestimator(), generateCut(), generateCutFactorable(), generateCutLTI(), generateCutUnboundedLP(), generateDisjCutSOS1(), generateLinearizationCut(), generateOddCycleCut(), generateOverestimatingHyperplaneCut(), generateRowCardinality(), generateRowSOS2(), generateZerohalfCut(), getActivityResidualsLowerBound(), getActivityResidualsUpperBound(), getBoundConsFromVertices(), getBranchingDecisionStrongbranchSOS1(), getBranchingPrioritiesSOS1(), getClosestVlb(), getClosestVub(), getCurrentRegressionTangentAxisIntercept(), getGenVBoundsBound(), getGenVBoundsMinActivity(), getGenVBoundsMinActivityConflict(), getImpliedBounds(), getLinearConsSides(), getMinFeas(), getMinMaxActivityResiduals(), getObjectiveFactor(), getOptimalShiftingValue(), getPotentialContributed(), getTimeLeft(), getVarBoundsOfRow(), getVariable(), getVariableRedcostScore(), heurExec(), infinityCountUpdate(), initComponent(), initConshdlrData(), initEventhandlerData(), initLP(), initMatrix(), isValue(), level2resultEqual(), LOPseparate(), maximalslack(), mod2MatrixTransformContRows(), newsolCliqueAddRow(), nodepairqueueCreate(), nodepartitionIsConnected(), parseType(), performStrongbranchWithPropagation(), polishSolution(), preprocessConstraintPairs(), presolveAddKKTKnapsackConss(), presolveAddKKTLinearCons(), presolveAddKKTLogicorConss(), presolveAddKKTSetppcConss(), presolveCreateBenTalNemirovskiApproxDim3(), presolveCreateGlineurApproxDim3(), presolveCreateOuterApprox(), presolveDisaggregate(), presolveDual(), presolveFindDuplicates(), presolveRemoveFixedVariables(), presolveTryAddLinearReform(), prettifyConss(), pricing(), printAndCons(), propagateBounds(), propagateBoundsBilinearTerm(), propagateBoundsCons(), propagateBoundsGetQuadActivity(), propagateBoundsQuadVar(), propagateBoundsTightenVar(), propagateCons(), propagateVarbounds(), propdataInit(), propIndicator(), readBounds(), readCnf(), readCols(), readColsMop(), readConstraints(), readIndicators(), readLIBSVM(), readNonlinearExprs(), readObjective(), readOPBFile(), readQMatrix(), readQuadraticCoefs(), readRows(), readRowsMop(), readSol(), readSolFile(), readVariables(), readXmlSolFile(), reformMonomial(), registerBranchingCandidatesGap(), relaxVar(), replaceByLinearConstraints(), replaceViolatedByLinearConstraints(), resetSubproblemObjectiveValue(), runBenders(), runVanillaStrongBranching(), SCIP_DECL_BRANCHEXECEXT(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCOPY(), SCIP_DECL_CONSENFOLP(), SCIP_DECL_CONSINITLP(), SCIP_DECL_CONSINITPRE(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_CONSPARSE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_DISPINITSOL(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_EVENTINIT(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_EXPRGRAPHVARADDED(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_NODESELSELECT(), SCIP_DECL_NONLINCONSUPGD(), SCIP_DECL_PARAMCHGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PRICERREDCOST(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIP_DECL_TABLEOUTPUT(), SCIPaddCoefLinear(), SCIPaddConflict(), SCIPaddToNlpiProblemSOC(), SCIPaddTrustregionNeighborhoodConstraint(), SCIPaggrRowCancelVarWithBound(), SCIPapplyHeurSubNlp(), SCIPapplyProximity(), SCIPbendersComputeSubproblemLowerbound(), SCIPbendersSolveSubproblem(), SCIPbendersSolveSubproblemLP(), SCIPchgLhsQuadratic(), SCIPchgRhsQuadratic(), SCIPcomputeConvexEnvelopeFacet(), SCIPconsGetLhs(), SCIPconsGetRhs(), SCIPcopyConss(), SCIPcreateConsIndicator(), SCIPcreateConsLinear(), SCIPcreateConsOrbitope(), SCIPcreateConsPseudoboolean(), SCIPcreateConsPseudobooleanWithConss(), SCIPcreateNlpiProb(), SCIPcreateSchedulingProblem(), SCIPcutGenerationHeuristicCMIR(), SCIPevalExprtreeGlobalBounds(), SCIPevalExprtreeLocalBounds(), SCIPgenerateAndApplyBendersOptCut(), SCIPgetConcurrentGap(), SCIPgetFeasibilityQuadratic(), SCIPgetFirstLPLowerboundRoot(), SCIPgetLowerbound(), SCIPgetRowprepRowCons(), SCIPgetRowprepRowConshdlr(), SCIPgetRowprepRowSepa(), SCIPgetUpperbound(), SCIPgetVarLbAtIndex(), SCIPgetVarStrongbranchWithPropagation(), SCIPgetVarUbAtIndex(), SCIPincludeBenderscutInt(), SCIPincludeBranchrulePscost(), SCIPincludeConshdlrAbspower(), SCIPincludeConshdlrBenderslp(), SCIPincludeConshdlrBivariate(), SCIPincludeConshdlrNonlinear(), SCIPincludeConshdlrQuadratic(), SCIPincludeConshdlrSOC(), SCIPincludeHeurDualval(), SCIPincludeHeurIndicator(), SCIPincludeHeurMpec(), SCIPincludeHeurMultistart(), SCIPincludeHeurProximity(), SCIPincludeHeurSubNlp(), SCIPincludePresolMILP(), SCIPincludePropNlobbt(), SCIPincludeSepaEccuts(), SCIPmatrixCreate(), SCIPmatrixRemoveColumnBounds(), SCIPparseReal(), SCIPperformGenericDivingAlgorithm(), SCIPprobdataAddNewSol(), SCIPreadOpb(), SCIPselectVarPseudoStrongBranching(), SCIPselectVarStrongBranching(), SCIPsolveProbingRelax(), SCIPStpDualAscent(), SCIPStpDualAscentPcMw(), SCIPStpReaderIncludeParams(), SCIPsyncstoreGetLastLowerbound(), SCIPsyncstoreGetLastUpperbound(), SCIPsyncstoreStartSync(), SCIPtreemodelSelectCandidate(), SCIPupdateNlpiProb(), SCIPverifyCircularPatternNLP(), SCIPwriteGms(), SCIPwriteLp(), SCIPwriteMps(), SCIPwritePip(), selectEssentialRounding(), selectRounding(), selectShifting(), selectVarMultAggrBranching(), selectVarRecursive(), sep_flow(), sepaImplBoundCutsSOS1(), separateCons(), separateCoverCutsCons(), separateCoversOrbisack(), separateCuts(), separateIndicators(), separatePerspective(), separatePoint(), separateSCIs(), separateSequLiftedExtendedWeightInequality(), separateSequLiftedMinimalCoverInequality(), separateSupLiftedMinimalCoverInequality(), sepaSubtour(), setupAndSolve(), setupAndSolveFiniteSolSubscip(), setupAndSolveSubscip(), setupProblem(), setupSubScip(), solveBendersSubproblems(), solveComponent(), solvePricingMINLP(), solveSingleRowLP(), sortVariables(), splitOffLinearPart(), storeSolution(), subtreeSumGapInsertChildren(), subtreeSumGapRemoveNode(), switchNext(), tightenVarsBoundsSOS1(), transformColumn(), transformVariable(), tryUpgradingLogicor(), tryUpgradingSetppc(), updateActivities(), updateAuxiliaryNonlinearSubproblem(), updateBestCandidate(), updateBounds(), updateRowActivities(), updateTransformation(), upgradeLinearSuperindicator(), writeFzn(), and writeOpbConstraints().

◆ SCIPgetHugeValue()

SCIP_EXPORT SCIP_Real SCIPgetHugeValue ( SCIP * scip )

returns the minimum value that is regarded as huge and should be handled separately (e.g., in activity computation)

Parameters

scip	SCIP data structure

Definition at line 540 of file scip_numerics.c.

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

Referenced by computeRelaxedLowerbound(), computeRelaxedUpperbound(), and resolvePropagation().

◆ SCIPisEQ()

SCIP_EXPORT SCIP_Bool SCIPisEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if values are in range of epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 438 of file scip_numerics.c.

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

Referenced by addAltLPColumn(), addAltLPConstraint(), addAltLPRow(), addCoefTerm(), addConcaveEstimatorBivariate(), addConcaveEstimatorUnivariate(), addConflictBounds(), addConflictReasonVars(), addIntervalGradientEstimator(), addLinearCoef(), addLinearization(), addLocalBranchingConstraint(), addOneRow(), addPathCuts(), addQuadVarTerm(), addSplitcons(), addSubtourCuts(), addTourCuts(), addVarbound(), adjustCutoffbound(), aggregateConstraints(), aggregateNextRow(), analyzeConflictLowerbound(), analyzeConflictUpperbound(), applyDomainChanges(), applyFixings(), assignVars(), bottleneckRuleOut(), branchOnBin(), buildMod2Matrix(), buildsolgraph(), calcGap(), calcPscostQuot(), calculateAlternatives(), cancelCol(), cancelRow(), catchEvent(), catchVarEvents(), central_terminal(), checkCons(), checkConsnames(), checkFixedVariables(), checkIISlocal(), checkSolution(), checkSymmetriesAreSymmetries(), checkSystemGF2(), chgLhs(), chgRhs(), chooseCoefVar(), chooseDoubleVar(), chooseFracVar(), chooseGuidedVar(), collectCoefficients(), combineCols(), compareNodes(), componentSetupWorkingSol(), computeBilinEnvelope2(), computeCut(), computeImpliedEst(), computeImpliedLct(), computeRelaxedLowerbound(), computeRelaxedUpperbound(), computeSVTS(), computeSymmetryGroup(), computeTransVoronoi(), computeVarRatio(), computeViolation(), polyscip::doubledescription::DoubleDescriptionMethod::computeVRep_Var1(), consdataCreate(), consdataFree(), consdataPrint(), constructCompression(), constructValidSolution(), convertBoundToInt(), correctLocksAndCaptures(), createAltLPColumn(), createAndAddLinearCons(), createCGCutCMIR(), createCGCutDirect(), createCGCutStrongCG(), createCGMIPprimalsols(), createSubproblem(), createSubscip(), detectDominatingVlbs(), detectDominatingVubs(), detectParallelCols(), determineBestBounds(), determineBoundForSNF(), displayRelevantStats(), dropEvent(), dualBoundStrengthening(), dualPresolve(), extractCapacityRows(), extractCycle(), extractFlowRows(), fillGraphByColoredCoefficients(), findAggregation(), findDaRoots(), findDominancePairs(), findFixings(), findNonDominatedVars(), fixAlmostFixedX(), fixAndPropagate(), fixMatchingSolutionValues(), forbidFixation(), generate1ConvexIndefiniteUnderestimatorAtBoundary(), generateConvexConcaveUnderestimator(), generateCut(), generateCutNonConvex(), generateEstimatingHyperplane(), generateLinearizationCut(), generateOrthogonal_lx_ly_Underestimator(), generateOrthogonal_lx_uy_Underestimator(), generateUnderestimatorParallelYFacets(), getBinVarsRepresentatives(), getGenVBoundsMinActivityConflict(), getlecloseterms(), getLinVarsAndAndRess(), getRandomVariable(), getReward(), getScore(), getScoreLikeCoefdiving(), getVariablePscostScore(), globalfixing(), graph_edge_add(), graph_pc_chgPrize(), graph_pc_contractEdge(), graph_pc_subtractPrize(), graph_voronoiWithDist(), impliesVlbPrecedenceCondition(), improvePoint(), isCandidate(), isConvexLocal(), isPartition(), lifting(), markPcMwRoots(), nodeGetUctScore(), parseConstantArrayAssignment(), parseValue(), performBranching(), performDualfix(), preprocessConstraintPairs(), presolRoundIndicator(), presolveDual(), presolveFindDuplicates(), presolveFindDuplicatesSolveEquations(), presolveFindDuplicatesUpgradeCons(), presolveSolve(), presolveTryAddLinearReform(), prettifyConss(), printActiveVariables(), printBoundSection(), printLinearCons(), printNonlinearCons(), printNonLinearCons(), printPseudobooleanCons(), printQuadraticCons(), printRangeSection(), printRowType(), printSignpowerCons(), processRealBoundChg(), propagateBoundsCons(), propagateCons(), propagateOrbitalFixing(), propagateRedcostVar(), propagateVbounds(), propIndicator(), readConstraints(), readIndicators(), readRanges(), reduce_daPcMw(), reduce_daSlackPrune(), reduce_daSlackPruneMw(), reduce_sd(), reduce_simple_pc(), reduceCheckEdge(), reduceSap(), reduceSPG(), reformMonomial(), registerBranchingCandidatesCentrality(), registerBranchingVariables(), registerLargeRelaxValueVariableForBranching(), removeFixedVariables(), removeZeros(), removeZerosQuad(), replaceByLinearConstraints(), replaceQuadVarTermPos(), replaceViolatedByLinearConstraints(), resolveGenVBoundPropagation(), resolvePropagation(), reuseSolution(), rowprepCleanupIntegralCoefs(), SCIP_DECL_BRANCHEXECEXT(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_CONSPARSE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSPRINT(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_DIVESETGETSCORE(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_NODESELCOMP(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PROPEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_READERWRITE(), SCIP_DECL_SEPAEXECLP(), SCIPaddCoefPseudoboolean(), SCIPaddConstantQuadratic(), SCIPanalyzeDeductionsProbing(), SCIPapplyHeurDualval(), SCIPapplyHeurSubNlp(), SCIPbendersSetupSubproblem(), SCIPchgVarObjProbing(), SCIPcomputeBilinEnvelope2(), SCIPcomputeConvexEnvelopeFacet(), SCIPcreateConsAbspower(), SCIPcreateConsOrbitope(), SCIPcreateFiniteSolCopy(), SCIPcutGenerationHeuristicCMIR(), SCIPmatrixGetParallelCols(), SCIPmatrixGetParallelRows(), SCIPprobdataAddNewSol(), SCIPpropagateProbing(), SCIPresolveSolHeurSubNlp(), SCIPsnprintfProbingStats(), SCIPStpDualAscentPcMw(), SCIPStpHeurRecRun(), SCIPvalidateSolve(), SCIPwriteGms(), SCIPwriteMps(), SCIPwriteStp(), sddeltable(), selectBranchVar(), selectdiffsols(), selectShifting(), selectVarRecursive(), separateCuts(), setupAggregationData(), setupAndSolveSubscipRapidlearning(), shortenSubtree(), solveComponent(), solveDerivativeEquation(), solveSingleRowLP(), strengthenVarbounds(), subtreeSumGapInsertChildren(), subtreeSumGapUpdate(), tightenBounds(), tightenCoefs(), tightenVariables(), tightenVarsBoundsSOS1(), transformColumn(), transformNonIntegralRow(), tryUpgradingLogicor(), tryUpgradingXor(), updateBestCandidate(), updateFirstRow(), updateLogRegression(), updateObjUpperbound(), updateVariableRounding(), upgradeConss(), and writeFzn().

◆ SCIPisLT()

SCIP_EXPORT SCIP_Bool SCIPisLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is (more than epsilon) lower than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 451 of file scip_numerics.c.

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

Referenced by addBilinearTermToCut(), addCoef(), addConflictBounds(), addLinearizationCuts(), addNodesInformation(), addScenarioVarsAndConsToProb(), analyzeConflictUpperbound(), assignNextBin(), bottleneckRuleOut(), branch(), buildMod2Matrix(), calcPscostQuot(), central_terminal(), checkLeavesBelowIncumbent(), checkSetupTolerances(), chgLhs(), chgProbingBound(), chooseCoefVar(), chooseDoubleVar(), chooseFracVar(), chooseGuidedVar(), choosePscostVar(), chooseVeclenVar(), combineCols(), compareNodes(), compEdges(), compensateVarLock(), componentSetupWorkingSol(), computeDaSolPcMw(), computeDegConsTree(), computeSCTable(), computeSteinerTree(), constructValidSolution(), createSubscip(), detectDominatingVlbs(), determineBestBounds(), determineBoundForSNF(), determineVariableFixings(), dualBoundStrengthening(), dualPresolve(), dualPresolving(), ensureScoresPresent(), evaluateLiftingFunction(), execRelpscost(), findBestUb(), findComponents(), findDominancePairs(), findNonDominatedVars(), generateCut(), generateCutLTIcomputeCoefs(), generateZerohalfCut(), getAlphaAndBeta(), getcloseterms(), getcloseterms2term(), getFixVal(), getlecloseterms(), getPartitionCovervars(), getRSD(), getScore(), globalfixing(), graph_pc_2mw(), graph_pc_2rmw(), graph_pc_getSapShift(), graph_voronoiWithDist(), graph_voronoiWithRadius(), graph_voronoiWithRadiusMw(), impliesVlbPrecedenceCondition(), infinityCountUpdate(), maxCircles(), mod2matrixPreprocessRows(), performDualfix(), performRandRounding(), performStrongbranchWithPropagation(), polishSolution(), predBndStr(), presolveDual(), prettifyConss(), processBinvarFixings(), processRealBoundChg(), propagateBoundsCons(), propagateCons(), propagateCutoffboundVar(), proposeBranchingPoint(), readBounds(), reduce_ans(), reduce_bd34(), reduce_bound(), reduce_boundHop(), reduce_boundHopR(), reduce_boundHopRc(), reduce_boundMw(), reduce_boundPrune(), reduce_da(), reduce_daSlackPrune(), reduce_getSd(), reduce_nts(), reduce_nvAdv(), reduce_sd(), reduce_sdPc(), reduce_sdsp(), reduce_simple(), reduce_simple_hc(), reduce_simple_pc(), reduce_simple_sap(), reduce_sl(), reducePcMwTryBest(), reduceWithEdgeFixingBounds(), reduceWithNodeFixingBounds(), reduceWithNodeReplaceBounds(), registerBranchingCandidates(), registerBranchingCandidatesGap(), releaseNodeFromDepthInfo(), resolveGenVBoundPropagation(), rowprepCleanupImproveCoefrange(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_CONSSEPALP(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_NODESELCOMP(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_SEPAEXECLP(), SCIPaddRow(), SCIPapplyProbingVar(), SCIPbendersSetupSubproblem(), SCIPbranchVarVal(), SCIPbranchVarValNary(), SCIPheurPassSolAddSol(), SCIPheurPassSolTrySol(), SCIPlinkcuttreeFindMinChain(), SCIPmakeSOS1sFeasible(), SCIPperformGenericDivingAlgorithm(), SCIPselectVarStrongBranching(), SCIPseparateRelaxedKnapsack(), SCIPshrinkDisjunctiveVarSet(), SCIPStpDualAscent(), SCIPStpDualAscentPcMw(), SCIPStpHeurLocalExtendPcMw(), SCIPStpHeurLocalRun(), SCIPStpHeurRecExclude(), SCIPStpHeurRecRun(), SCIPStpHeurSlackPruneRunPcMw(), SCIPStpHeurTMRun(), SCIPStpHeurTMRunLP(), SCIPtreemodelSelectCandidate(), SCIPupdateDistributionScore(), selectBranchingVertexByLp(), separateCons(), setupProblem(), singletonColumnStuffing(), solveAndEvalSubscip(), solveComponent(), solveSingleRowLP(), tightenBounds(), tightenCoefs(), tightenVariables(), tightenVarUb(), transformAndSolve(), transformNonIntegralRow(), truncateSubtree(), updateBestCandidate(), updateNodeReplaceBounds(), updateObjUpperbound(), and utdist().

◆ SCIPisLE()

SCIP_EXPORT SCIP_Bool SCIPisLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is not (more than epsilon) greater than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 464 of file scip_numerics.c.

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

Referenced by addBilinearTermToCut(), addConcaveEstimatorUnivariate(), addConstraint(), addNewLocks(), addSplitcons(), aggregateConstraints(), analyzeGenVBoundConflict(), ansProcessCandidate(), applyProbingVar(), assignVars(), bottleneckRuleOut(), checkFixedVariables(), checkOrigPbCons(), checkSystemGF2(), chgLhs(), chgProbingBound(), chgRhs(), chooseDoubleVar(), collectNonBinaryImplicationData(), combineCols(), compensateVarLock(), computeDaSolPcMw(), computeDegConsTree(), computeInteriorPoint(), computePertubedSol(), consdataPrint(), correctLocksAndCaptures(), createConsFromMonomial(), createConsFromQuadTerm(), cutsRoundMIR(), cutsRoundStrongCG(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), cutTightenCoefs(), cutTightenCoefsQuad(), detectDominatingVubs(), determineBestBounds(), determineBoundForSNF(), determineVariableFixings(), dualBoundStrengthening(), dualPresolve(), edgecostmultiplier(), enumeratePatterns(), evaluateGauge(), evaluateLiftingFunction(), filterCands(), filterPoints(), findBestUb(), findFixings(), findUplockAggregations(), generateConvexConcaveUnderestimator(), generateCutLTIcomputeCoefs(), generateEstimatingHyperplane(), generateSecantCut(), generateSecantCutNoCheck(), getAlphaAndBeta(), getFixingValue(), getFixVal(), getGMIFromRow(), getImpliedBounds(), getlecloseterms(), getLinVarsAndAndRess(), getNCircles(), graph_path_PcMwSd(), graph_pc_2mw(), heurExec(), impliesVlbPrecedenceCondition(), initsepaBoundInequalityFromCardinality(), isOverlapping(), lockRoundingAndCons(), performDualfix(), performStrongbranchWithPropagation(), predBndStr(), presolveDual(), projectVbd(), propagateBounds(), propagateBoundsTightenVarLb(), propagateCons(), proposeBranchingPoint(), reduce_ansAdv(), reduce_ansAdv2(), reduce_bd34(), reduce_boundMw(), reduce_cnsAdv(), reduce_da(), reduce_daSlackPrune(), reduce_daSlackPruneMw(), reduce_getSd(), reduce_npv(), reduce_nv(), reduce_nvAdv(), reduce_simple(), reduce_simple_mw(), reduce_simple_pc(), reduce_sl(), reduceMw(), reducePc(), reduceStp(), reformulate(), registerBranchingCandidatesGap(), registerBranchingCandidatesViolation(), removeOldLocks(), resolveGenVBoundPropagation(), sampleRandomPoints(), SCIP_DECL_CONCSOLVERSYNCREAD(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSGETDIVEBDCHGS(), SCIP_DECL_CONSINITPRE(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPaddBilinMcCormick(), SCIPaddSquareSecant(), SCIPanalyzeDeductionsProbing(), SCIPapplyProbingVar(), SCIPchgLhsQuadratic(), SCIPchgRhsQuadratic(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPcreateConsSOC(), SCIPcutsTightenCoefficients(), SCIPprintSolutionStatistics(), SCIPseparateRelaxedKnapsack(), SCIPStpDualAscentPcMw(), SCIPStpHeurLocalRun(), SCIPStpHeurPruneUpdateSols(), SCIPStpHeurSlackPruneRun(), SCIPStpHeurTMRun(), searchEcAggrWithMIP(), selectNextDiving(), separateCuts(), separatePoint(), setSymmetryData(), setupAndSolveSubscipRapidlearning(), singletonColumnStuffing(), solveAndEvalSubscip(), solveComponent(), solveSingleRowLP(), solveSubNLP(), subtreeSumGapRemoveNode(), transformVariable(), traverseChain(), trydg1edgepc(), tryUpgradingSetppc(), unlockRoundingAndCons(), updateBestCandidate(), updateDualBounds(), updateNodeReplaceBounds(), updateTransformation(), upgradeConss(), and upgradeLinearSuperindicator().

◆ SCIPisGT()

SCIP_EXPORT SCIP_Bool SCIPisGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is (more than epsilon) greater than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 477 of file scip_numerics.c.

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

Referenced by addBilinearTermToCut(), addBranchingComplementaritiesSOS1(), addCoef(), addConflictBounds(), addGenVBound(), addLinearizationCuts(), addPathCuts(), addRelaxation(), addSubtourCuts(), addTourCuts(), adjust0term(), aggregateNextRow(), analyzeConflictLowerbound(), ansProcessCandidate(), applyNlobbt(), applyProbingVar(), assignNextBin(), calcPscostQuot(), checkDivingCandidates(), checkPackingPartitioningOrbitopeSolution(), checkSetupTolerances(), checkVarbound(), chgProbingBound(), chgRhs(), chooseCoefVar(), chooseDoubleVar(), chooseFracVar(), chooseGuidedVar(), choosePscostVar(), chooseVeclenVar(), combineCols(), compareNodes(), compensateVarLock(), computeDegConsTree(), computeLiftingData(), computeNextAdjacency(), computePosRingCircle(), computeSteinerTreeVnoi(), computeSVTS(), computeViolation(), computeViolations(), consdataCreate(), correct(), correctX(), createSubscip(), cutoffEdge(), cutsTransformMIR(), cutTightenCoefs(), cutTightenCoefsQuad(), detectDominatingVubs(), determineBestBounds(), determineBoundForSNF(), determineVariableFixings(), dualBoundStrengthening(), dualcostVarfixing(), dualPresolve(), enfopsPackingPartitioningOrbitopeSolution(), enforceConstraint(), enforceViolatedFixedNonlinear(), enumeratePatterns(), evaluateLiftingFunction(), execRelpscost(), extractCycle(), findBestLb(), findDaRoots(), findNonDominatedVars(), fixAlmostFixedX(), generateCut(), generateCutLTIcomputeCoefs(), generateCutSol(), generateLiftedFlowCoverCut(), generateSparseCut(), generateZerohalfCut(), getAlphaAndBeta(), getcloseterms2term(), getFixVal(), getlecloseterms(), getNCircles(), getObjectiveFactor(), getOptimalShiftingValue(), getRSD(), getScore(), getScoreLikeCoefdiving(), getVarRank(), graph_edge_redirect(), graph_get2next(), graph_get3next(), graph_get4next(), graph_load(), graph_pack(), graph_path_execX(), graph_path_invroot(), graph_path_PcMwSd(), graph_path_st_pcmw(), graph_path_st_pcmw_extend(), graph_path_st_pcmw_full(), graph_path_st_rmw(), graph_path_st_rpc(), graph_pc_2mw(), graph_pc_2rmw(), graph_pc_getSapShift(), graph_sdPaths(), graph_voronoi(), graph_voronoiMw(), graph_voronoiRepair(), graph_voronoiRepairMult(), graph_voronoiTerms(), graph_voronoiWithDist(), graph_voronoiWithRadius(), graph_voronoiWithRadiusMw(), impliesVlbPrecedenceCondition(), improvePoint(), infinityCountUpdate(), performRandRounding(), performStrongbranchWithPropagation(), polishSolution(), presolveDual(), presolveFindDuplicates(), printRangeSection(), printRowType(), processCut(), processRealBoundChg(), propagateBounds(), propagateBoundsCons(), propagateCons(), proposeBranchingPoint(), proposeFeasibleSolution(), readBounds(), reduce_ansAdv(), reduce_ansAdv2(), reduce_bound(), reduce_boundHop(), reduce_boundHopR(), reduce_boundHopRc(), reduce_boundMw(), reduce_boundPrune(), reduce_check3Tree(), reduce_cnsAdv(), reduce_daPcMw(), reduce_daSlackPrune(), reduce_daSlackPruneMw(), reduce_getSd(), reduce_getSdPcMw(), reduce_ledge(), reduce_npv(), reduce_nts(), reduce_rpt(), reduce_sd(), reduce_sdPc(), reduce_sdsp(), reduce_sdspSap(), reduce_simple_sap(), reduceCheckEdge(), reducePcMw(), reducePcMwTryBest(), reduceSPG(), registerBranchingCandidates(), registerBranchingCandidatesCentrality(), registerBranchingCandidatesGap(), registerBranchingCandidatesViolation(), registerBranchingVariables(), registerLargeRelaxValueVariableForBranching(), releaseNodeFromDepthInfo(), replaceByLinearConstraints(), replaceViolatedByLinearConstraints(), reset(), resetX(), resolveGenVBoundPropagation(), rowprepCleanupImproveCoefrange(), ruleOutSubtree(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOPS(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_CONSSEPALP(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_NODESELCOMP(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PROPEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_RELAXEXEC(), SCIPaddBilinearIneqQuadratic(), SCIPaddRow(), SCIPapplyProbingVar(), SCIPbendersSetupSubproblem(), SCIPcopyConsLinear(), SCIPcutsTightenCoefficients(), SCIPheurPassSolAddSol(), SCIPheurPassSolTrySol(), SCIPprobdataAddNewSol(), SCIPselectVarStrongBranching(), SCIPseparateRelaxedKnapsack(), SCIPshrinkDisjunctiveVarSet(), SCIPStpHeurLocalRun(), SCIPStpHeurRecAddToPool(), SCIPStpHeurRecRun(), SCIPStpHeurTMRun(), SCIPStpHeurTMRunLP(), SCIPtreemodelSelectCandidate(), SCIPupdateDistributionScore(), selectVarRecursive(), separateCons(), separatePerspective(), separatePoint(), separateSymresackCovers(), setMinMaxElims(), singletonColumnStuffing(), solveAndEvalSubscip(), solvePricingHeuristic(), storeAggrFromMIP(), tightenBounds(), tightenCoefs(), tightenVariables(), tightenVarLb(), transformAndSolve(), transformNonIntegralRow(), trydg1edgepc(), updateBestCandidate(), updateSubproblemCutConstant(), and writeOpbConstraints().

◆ SCIPisGE()

SCIP_EXPORT SCIP_Bool SCIPisGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is not (more than epsilon) lower than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 490 of file scip_numerics.c.

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

Referenced by addBilinearTermToCut(), addNodesInformation(), addSplitcons(), analyzeGenVBoundConflict(), applyProbingVar(), assignVars(), checkFixedVariables(), checkSystemGF2(), checkVarbound(), chgProbingBound(), collectNonBinaryImplicationData(), combineCols(), compEdges(), computeCut(), computeDegConsTree(), computeInteriorPoint(), polyscip::Polyscip::computeNondomPoints(), computePertubedSol(), computePosCircleCircle(), computePosRingCircle(), computeSteinerTreeVnoi(), computeSVTS(), computeVarRatio(), createCGCutCMIR(), createCGCutDirect(), createCGCutStrongCG(), cutsTransformMIR(), cutTightenCoefsQuad(), detectDominatingVlbs(), dualcostVarfixing(), dualPresolve(), dualPresolving(), edgecostmultiplier(), evaluateGauge(), execRelpscost(), executeBranchingRecursive(), findBestLb(), findDominancePairs(), findDownlockAggregations(), findFixings(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternB(), generateAndApplyBendersCuts(), generateConvexConcaveUnderestimator(), generateCutLTIcomputeCoefs(), generateCutNonConvex(), generateEstimatingHyperplane(), generateLiftedFlowCoverCut(), getBinVarIdxInDownlockRow(), getBinVarIdxInUplockRow(), getFixingValue(), getImpliedBounds(), getlecloseterms(), getPartitionCovervars(), graph_edge_add(), graph_path_st_pcmw_extend(), graph_path_st_pcmw_reduce(), graph_path_st_rmw(), graph_path_st_rpc(), graph_pc_2mw(), graph_pc_2pc(), graph_pc_2rmw(), graph_pc_2rpc(), graph_pc_chgPrize(), graph_pc_getSapShift(), graph_pc_mw2rmw(), graph_pc_subtractPrize(), graph_voronoiWithRadius(), graph_voronoiWithRadiusMw(), identifySourcesTargets(), impliesVlbPrecedenceCondition(), isNlobbtApplicable(), isVlb(), isVub(), nodeGetUctScore(), performLPRandRounding(), performLPSimpleRounding(), performStrongbranchWithPropagation(), presolveCreateBenTalNemirovskiApproxDim3(), presolveCreateGlineurApproxDim3(), presolveDual(), prettifyConss(), propagateBoundsTightenVarUb(), propagateCons(), propagateCutoffboundGlobally(), proposeBranchingPoint(), reduce_ansAdv2(), reduce_bd34(), reduce_bound(), reduce_boundHop(), reduce_boundMw(), reduce_boundPrune(), reduce_chain2(), reduce_check3Tree(), reduce_cnsAdv(), reduce_da(), reduce_daSlackPruneMw(), reduce_ledge(), reduce_npv(), reduce_nts(), reduce_nv(), reduce_nvAdv(), reduce_sd(), reduce_sdsp(), reduce_sdspSap(), reduce_simple_hc(), reduce_simple_mw(), reduce_sl(), reduceCheckEdge(), reducePcMw(), reducePcMwTryBest(), reformulate(), registerBranchingCandidatesGap(), registerBranchingCandidatesViolation(), resolveGenVBoundPropagation(), runVanillaStrongBranching(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONCSOLVERSYNCREAD(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSGETDIVEBDCHGS(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_SEPAEXECLP(), SCIP_DECL_TABLEOUTPUT(), SCIPaddBilinMcCormick(), SCIPaddSquareSecant(), SCIPanalyzeDeductionsProbing(), SCIPapplyHeurDualval(), SCIPapplyProbingVar(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPcreateConsSOC(), SCIPgetVarStrongbranchWithPropagation(), SCIPlinkcuttreeFindMax(), SCIPperformGenericDivingAlgorithm(), SCIPselectVarPseudoStrongBranching(), SCIPselectVarStrongBranching(), SCIPseparateRelaxedKnapsack(), SCIPsolveDiveLP(), SCIPsolveKnapsackExactly(), SCIPStpDualAscent(), SCIPStpDualAscentPcMw(), SCIPStpHeurTMRun(), SCIPStpHeurTMRunLP(), SCIPtryStrongbranchLPSol(), SCIPupdateNodeLowerbound(), SCIPverifyCircularPatternHeuristic(), selectNextDiving(), selectVarMultAggrBranching(), selectVarRecursive(), separateCuts(), setSymmetryData(), shortenSubtree(), singletonColumnStuffing(), solveAndEvalSubscip(), solveComponent(), solveProbingLP(), traverseChain(), trydg1edgepc(), updateBestCandidate(), updateNodeReplaceBounds(), and upgradeLinearSuperindicator().

◆ SCIPisInfinity()

SCIP_EXPORT SCIP_Bool SCIPisInfinity	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is (positive) infinite

Parameters

scip	SCIP data structure
val	value to be compared against infinity

Definition at line 514 of file scip_numerics.c.

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

Referenced by addAltLPColumn(), addAltLPConstraint(), addAltLPRow(), addBilinearTermToCut(), addBranchingComplementaritiesSOS1(), addCoef(), addConcaveEstimatorBivariate(), addConcaveEstimatorMultivariate(), addConcaveEstimatorUnivariate(), addConstraint(), addCut(), addFacetToCut(), addGenVBound(), addIntervalGradientEstimator(), addLinearization(), addLinearizationCuts(), addLinearTermToCut(), addLocalbranchingConstraintAndObjcutoff(), addNewLocks(), addObjcut(), addOneRow(), addRelaxation(), addRow(), addSlackVars(), addVarbound(), aggregateConstraints(), aggregateNextRow(), aggregateVariables(), aggregation(), analyzeGenVBoundConflict(), applyBoundHeur(), applyDomainChanges(), applyFixings(), applyGenVBound(), applyHeur(), applyOptcumulative(), applyRepair(), applyVboundsFixings(), buildMod2Matrix(), calcActivityBounds(), calcBranchScore(), calcGap(), calcMaxColActivity(), calcMinColActivity(), calcMinColActResidual(), calcShiftVal(), calculateAlternatives(), calculateBounds(), calculateMinvalAndMaxval(), calcVarBoundsDominated(), calcVarBoundsDominating(), cancelCol(), cancelRow(), catchLinearVarEvents(), catchVarEvents(), checkArraySizesGLS(), checkArraySizesHeur(), checkCands(), checkCons(), checkConsQuadraticProblem(), checkCurvature(), checkCurvatureEasy(), checkCurvatureExpensive(), checkFixedVariables(), checkLogCriterion(), checkOptimalSolution(), checkOrigPbCons(), checkRedundancySide(), checkSubproblemConvexity(), chgCoeffWithBound(), chgLhs(), chgQuadCoeffWithBound(), chgRhs(), chgSideNonlinear(), chgSideQuadratic(), choosePscostVar(), collectCoefficients(), combineCols(), compareNodes(), compensateVarLock(), computeBoundsX(), computeBoundsZ(), computeCut(), computeED(), computeGauge(), computeInteriorPoint(), computeLiftingData(), computeMaxViolation(), computeReferencePointGauge(), computeReferencePointProjection(), computeStandardIntegerOptCut(), computeStandardLPFeasibilityCut(), computeStandardLPOptimalityCut(), computeStandardNLPFeasibilityCut(), computeStandardNLPOptimalityCut(), computeSVTS(), computeViolation(), consdataCheckNonbinvar(), consdataComputePseudoActivity(), consdataCreate(), consdataFindUnlockedLinearVar(), consdataFree(), consdataGetActivity(), consdataGetActivityResiduals(), consdataGetGlbActivityResiduals(), consdataIsResidualIntegral(), consdataPrint(), consdataRecomputeGlbMinactivity(), consdataRecomputeMaxactivity(), consdataRecomputeMaxActivityDelta(), consdataRecomputeMinactivity(), consdataSort(), consdataUpdateLinearActivity(), consdataUpdateLinearActivityLbChange(), consdataUpdateLinearActivityUbChange(), constructSNFRelaxation(), correctLocksAndCaptures(), createAltLPColumn(), createAndAddLinearCons(), createCGMIPprimalsols(), createCoveringProblem(), createKKTComplementarityBounds(), createKKTComplementarityLinear(), createKKTDualCons(), createLinking(), createNLP(), createNormalizedKnapsack(), createRows(), createSubproblem(), createSubscip(), cutsRoundMIR(), cutsRoundStrongCG(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), cutsTransformMIR(), cutsTransformStrongCG(), cutTightenCoefs(), cutTightenCoefsQuad(), determineBestBounds(), determineBound(), determineBoundForSNF(), determineLimits(), determineVariableFixings(), determineVariableFixingsDecomp(), displayRelevantStats(), doSeachEcAggr(), doSolveSubMIP(), dropLinearVarEvents(), dropVarEvents(), dualPresolve(), enforceConstraint(), enforceViolatedFixedNonlinear(), evalLhs(), evaluateCutNumerics(), evaluateGauge(), evaluateLiftingFunction(), extractCapacityRows(), extractFlowRows(), extractLinearValues(), filterCands(), filterExistingLP(), findAggregation(), findAndStoreEcAggregations(), findDownlockAggregations(), findFixings(), findPointPosition(), findUplockAggregations(), fixAlmostFixedX(), fixNonNeighborhoodVariables(), fixVariable(), generate1ConvexIndefiniteUnderestimator(), generate1ConvexIndefiniteUnderestimatorAtBoundary(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternA(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternB(), generateAndApplyBendersCuts(), generateAndApplyBendersIntegerCuts(), generateAverageNBRay(), generateAverageRay(), generateBoundInequalityFromSOS1Nodes(), generateClusterCuts(), generateConvexConcaveEstimator(), generateConvexConcaveUnderestimator(), generateCut(), generateCutFactorable(), generateCutFactorableDo(), generateCutLTI(), generateCutLTIcomputeCoefs(), generateCutLTIfindIntersection(), generateCutPoint(), generateCutProjectedPoint(), generateCutSol(), generateDisjCutSOS1(), generateEstimatingHyperplane(), generateLiftedFlowCoverCut(), generateLinearizationCut(), generateLinearizationCutProject(), generateOrthogonal_lx_ly_Underestimator(), generateOrthogonal_lx_uy_Underestimator(), generateOverestimatingHyperplaneCut(), generateRowCardinality(), generateRowSOS2(), generateSecantCut(), generateSecantCutNoCheck(), generateSparseCut(), generateUnderestimatorParallelYFacets(), generateZerohalfCut(), getActivityResidualsLowerBound(), getActivityResidualsUpperBound(), getBinVarIdxInDownlockRow(), getBinVarIdxInUplockRow(), getBoundConsFromVertices(), getBranchingPrioritiesSOS1(), getClosestVlb(), getClosestVub(), getCopyMemlimit(), getCopyTimelimit(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), getGenVBoundsBound(), getGenVBoundsMinActivity(), getGenVBoundsMinActivityConflict(), getGMIFromRow(), getImpliedBounds(), getLinearCoeffs(), getLinVarsAndAndRess(), getMaxActivitySingleRowWithoutCol(), getMinActivitySingleRowWithoutCol(), getMinColActWithoutRow(), getMinMaxActivityResiduals(), getObjectiveFactor(), getOptimalShiftingValue(), getPotential(), getPotentialContributed(), getRelDistance(), getReward(), getTimeLeft(), getVarBoundsOfRow(), getVariableRedcostScore(), handleNewVariableCardinality(), handleNewVariableSOS1(), hasQuadvarHpProperty(), improvePoint(), initMatrix(), initsepaBoundInequalityFromCardinality(), initSepaData(), invertCommodity(), isCandidate(), isConvexLocal(), isNlobbtApplicable(), isPossibleToComputeCut(), isRangedRow(), isZero(), lifting(), lockLinearVariable(), lockRounding(), lockRoundingAndCons(), mod2MatrixTransformContRows(), modifyAndPackCut(), nodeGetSolvalBinaryBigMSOS1(), nodeGetUctScore(), nodepairqueueCreate(), performDualfix(), performStrongbranchWithPropagation(), polishSolution(), predBndStr(), preprocessConstraintPairs(), presolve(), presolveAddKKTLinearCons(), presolveDisaggregate(), presolveDual(), presolveFindDuplicates(), presolveFindDuplicatesUpgradeCons(), presolveTryAddLinearReform(), prettifyConss(), printBounds(), printBoundSection(), printDualSol(), printIndicatorCons(), printLinearCons(), printLongStatistics(), printNonlinearCons(), printNonLinearCons(), printPseudobooleanCons(), printQuadraticCons(), printRangeSection(), printRhsSection(), printRowType(), printShortStatistics(), printSignpowerCons(), processHashlists(), propagateBounds(), propagateBoundsBilinearTerm(), propagateBoundsCons(), propagateBoundsGetQuadActivity(), propagateBoundsQuadVar(), propagateBoundsTightenVar(), propagateBoundsTightenVarLb(), propagateBoundsTightenVarUb(), propagateCons(), propagateConstraintSides(), propagateCutoffboundGlobally(), propagateCutoffboundVar(), propagateLowerboundBinvar(), propagateLowerboundVar(), propagateVarbounds(), propIndicator(), proposeBranchingPoint(), proposeFeasibleSolution(), readBinaries(), readBounds(), readCols(), readConstraints(), readIndicators(), readRanges(), readRhs(), redcostAvailable(), reformulate(), registerBranchingCandidates(), registerBranchingCandidatesCentrality(), registerBranchingCandidatesGap(), relaxVar(), removeFixedLinearVariables(), removeFixedVariables(), removeOldLocks(), removeZeros(), removeZerosQuad(), replaceByLinearConstraints(), replaceQuadVarTermPos(), replaceViolatedByLinearConstraints(), resolvePropagation(), retransformVariable(), rowCalculateGauss(), rowprepCleanupImproveCoefrange(), rowprepCleanupIntegralCoefs(), runBenders(), sampleRandomPoints(), SCIP_DECL_BRANCHEXECEXT(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSINITLP(), SCIP_DECL_CONSINITPRE(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSPARSE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSPRINT(), SCIP_DECL_CONSSEPALP(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_NODESELCOMP(), SCIP_DECL_NONLINCONSUPGD(), SCIP_DECL_PARAMCHGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PRICERREDCOST(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_RELAXEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPaddBilinLinearization(), SCIPaddBilinMcCormick(), SCIPaddBilinTermQuadratic(), SCIPaddCoefLinear(), SCIPaddConstantQuadratic(), SCIPaddLinearVarNonlinear(), SCIPaddLinearVarQuadratic(), SCIPaddQuadVarLinearCoefQuadratic(), SCIPaddQuadVarQuadratic(), SCIPaddRow(), SCIPaddSquareCoefQuadratic(), SCIPaddSquareLinearization(), SCIPaddSquareSecant(), SCIPaddVarImplication(), SCIPaggrRowAddCustomCons(), SCIPaggrRowAddRow(), SCIPaggrRowCancelVarWithBound(), SCIPapplyHeurDualval(), SCIPapplyHeurSubNlp(), SCIPapplyLockFixings(), SCIPapplyProximity(), SCIPbranchVarVal(), SCIPbranchVarValNary(), SCIPchgBilinCoefQuadratic(), SCIPchgLhsQuadratic(), SCIPchgRhsQuadratic(), SCIPchgSquareCoefQuadratic(), SCIPchgVarLb(), SCIPchgVarLbGlobal(), SCIPchgVarLbNode(), SCIPchgVarLbProbing(), SCIPchgVarObj(), SCIPchgVarObjProbing(), SCIPchgVarUb(), SCIPchgVarUbGlobal(), SCIPchgVarUbNode(), SCIPchgVarUbProbing(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPcomputeHyperplaneThreePoints(), SCIPcopyConsLinear(), SCIPcreateConsAbspower(), SCIPcreateConsBivariate(), SCIPcreateConsLinear(), SCIPcreateConsLinking(), SCIPcreateConsOrbitope(), SCIPcreateConsPseudoboolean(), SCIPcreateConsPseudobooleanWithConss(), SCIPcreateConsSOC(), SCIPcreateFiniteSolCopy(), SCIPcreateNlpiProb(), SCIPcreateVar(), SCIPcutGenerationHeuristicCMIR(), SCIPcutsTightenCoefficients(), SCIPgenVBoundAdd(), SCIPgetFeasibilityQuadratic(), SCIPgetVarLbAtIndex(), SCIPgetVarUbAtIndex(), SCIPincludePresolMILP(), SCIPinferVarLbCons(), SCIPinferVarLbProp(), SCIPinferVarUbCons(), SCIPinferVarUbProp(), SCIPisConvexAbspower(), SCIPisConvexConsQuadratic(), SCIPmakeIndicatorFeasible(), SCIPmatrixRemoveColumnBounds(), SCIPprintSolutionStatistics(), SCIPprintStage(), SCIProwCalcProbability(), SCIPseparateRelaxedKnapsack(), SCIPsolveKnapsackApproximatelyLT(), SCIPtightenVarLb(), SCIPtightenVarLbGlobal(), SCIPtightenVarUb(), SCIPtightenVarUbGlobal(), SCIPtransformProb(), SCIPtranslateSubSols(), SCIPtreemodelSelectCandidate(), SCIPvalidateSolve(), SCIPvarCalcDistributionParameters(), SCIPwriteGms(), SCIPwriteLp(), SCIPwriteMps(), SCIPwritePip(), selectBranchVar(), selectCandidateUsingSampling(), selectCandidateUsingSVTS(), selectShifting(), sepaImplBoundCutsSOS1(), separateCons(), separateCuts(), separatePerspective(), separatePoint(), setAndUpdateCorePoint(), setSubscipLimits(), setupAndSolveFiniteSolSubscip(), setupAndSolveSubscip(), setupAndSolveSubscipCrossover(), setupAndSolveSubscipMutation(), setupSubScip(), singletonColumnStuffing(), solveClassification(), solveComponent(), solveCumulative(), solveFeasibilityNonlinearSubproblem(), solveIndependentCons(), solveMinIISC(), solveNlp(), solveSingleRowLP(), solveSubproblem(), solveSubscip(), splitOffLinearPart(), storeAllBilinearTerms(), storeNonlinearConvexNlrows(), subtreeSumGapComputeFromScratchEfficiently(), subtreeSumGapInsertChildren(), subtreeSumGapUpdate(), termIsConvex(), tightenBounds(), tightenCoefs(), tightenVariables(), tightenVarsBoundsSOS1(), transformAndSolve(), transformColumn(), transformNonIntegralRow(), transformValue(), transformVariable(), tryFixVar(), unboundedAuxiliaryVariables(), unlockLinearVariable(), unlockRounding(), unlockRoundingAndCons(), updateActivities(), updateBestCandidate(), updateDualBounds(), updateImplicationGraphSOS1(), updateObjUpperbound(), updateRowActivities(), updateSlacks(), updateSubproblemLowerbound(), updateTransformation(), updateViolations(), updateWeightsTCliquegraph(), upgradeConss(), upgradeIndicatorSuperindicator(), upgradeLinearSuperindicator(), varProcessBoundChanges(), wrapperDins(), wrapperRins(), and writeFzn().

◆ SCIPisHugeValue()

SCIP_EXPORT SCIP_Bool SCIPisHugeValue	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is huge and should be handled separately (e.g., in activity computation)

Parameters

scip	SCIP data structure
val	value to be checked whether it is huge

Definition at line 526 of file scip_numerics.c.

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

Referenced by checkCons(), consdataComputePseudoActivity(), consdataGetActivityResiduals(), consdataGetGlbActivityResiduals(), consdataRecomputeGlbMinactivity(), consdataRecomputeMaxactivity(), consdataRecomputeMinactivity(), improvePoint(), propagateBoundsTightenVarLb(), propagateBoundsTightenVarUb(), SCIP_DECL_PRESOLEXEC(), selectShifting(), separateCuts(), simplifyInequalities(), solveBilinearLP(), and updateBestCandidate().

◆ SCIPisZero()

SCIP_EXPORT SCIP_Bool SCIPisZero	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is in range epsilon of 0.0

Parameters

scip	SCIP data structure
val	value to process

Definition at line 551 of file scip_numerics.c.

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

Referenced by addAltLPColumn(), addAltLPConstraint(), addBilinearTerm(), addBilinearTermToCut(), addCoefTerm(), addConcaveEstimatorBivariate(), addConflictBounds(), addFacetToCut(), addFlowrowToCommodity(), addGenVBound(), addIntervalGradientEstimator(), addLinearCoef(), addLinearization(), addLinearTermToCut(), addObjcut(), addRow(), addVarbound(), adjust0term(), adjustCutoffbound(), aggregateConstraints(), aggregation(), applyFixings(), applyRepair(), polyscip::WeightSpacePolyhedron::areAdjacent(), branchOnBin(), buildConvexCombination(), buildMod2Matrix(), calcActivityBounds(), calcEfficacyNormQuad(), calcVarBoundsDominated(), calcVarBoundsDominating(), cancelCol(), cancelRow(), catchObjEvent(), checkDivingCandidates(), checkFactorable(), checkFixedVariables(), checkSolution(), checkSymmetriesAreSymmetries(), chgLinearCoefPos(), collectMaxactVar(), collectMinactImplicVar(), collectMinactImplicVars(), collectMinactVar(), collectNonBinaryVBoundData(), combineCols(), componentSetupWorkingSol(), computeCut(), computePosRingCircle(), computeStandardLPFeasibilityCut(), computeStandardLPOptimalityCut(), computeStandardNLPFeasibilityCut(), computeStandardNLPOptimalityCut(), computeSymmetryGroup(), computeVarRatio(), polyscip::doubledescription::DoubleDescriptionMethod::computeVRep_Var1(), consdataCreate(), consdataFree(), correctLocksAndCaptures(), createAndAddAnds(), createAndAddLinearCons(), createConsFromMonomial(), createExprtreeFromMonomial(), createNewSol(), createNlRow(), createObjRow(), createProbSimplified(), createSubproblems(), createSubscip(), createTcliqueGraph(), createVariables(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), determineBestBounds(), disaggregate(), dropObjEvent(), dualCostIsValid(), ecaggrAddBilinTerm(), enforceConflictgraph(), enforceViolatedFixedNonlinear(), enumeratePatterns(), evaluateGauge(), execRelpscost(), fillGlobalStartingData(), filterExistingLP(), fixIntegerVariable(), fixVariableZero(), generateAndApplyBendersCuts(), generateBoundInequalityFromSOS1Nodes(), generateCloseCutPoint(), generateClusterCuts(), generateCutFactorable(), generateCutFactorableDo(), generateCutLTIcomputeCoefs(), generateCutLTIfindIntersection(), generateCutLTIgenMulCoeff(), generateCutPoint(), generateCutProjectedPoint(), generateCutUnboundedLP(), generateEstimatingHyperplane(), generateRowCardinality(), getActiveVar(), getBinVarsRepresentatives(), getBoundConsFromVertices(), getGenVBound(), getGMIFromRow(), getMaxactImplicObjchg(), getMinactImplicObjchg(), getObjectiveFactor(), getPotential(), getPotentialContributed(), getScore(), getScoreLikeCoefdiving(), graph_pc_mw2rmw(), handleNewVariableCardinality(), handleNewVariableSOS1(), polyscip::doubledescription::V_RepT::hasNonUnitAndNonZeroWeight(), hasQuadvarHpProperty(), improvePoint(), isPartition(), lockRounding(), mergeAndCleanBilinearTerms(), mergeAndCleanLinearVars(), mergeAndCleanQuadVarTerms(), mod2MatrixAddOrigRow(), mod2MatrixAddTransRow(), mod2matrixPreprocessColumns(), mod2matrixRemoveRow(), mod2rowAddRow(), modifyAndPackCut(), nodepairqueueCreate(), polyscip::Polyscip::numberofUnboundedResults(), objimplicsCreate(), optimize(), performDualfix(), performStrongbranchSOS1(), permuteStartSolution(), polishSolution(), preprocessConstraintPairs(), presolRoundCardinality(), presolRoundConsSOS1(), presolRoundSOS2(), presolveCreateBenTalNemirovskiApproxDim3(), presolveCreateGlineurApproxDim3(), presolveCreateOuterApprox(), presolveDisaggregate(), presolveDual(), presolveFindDuplicates(), presolveRemoveFixedVariables(), presolveSolve(), presolveTryAddLinearReform(), presolveUpgrade(), printActiveVariables(), printBoundSection(), printDualSol(), printLinearRow(), printNLRow(), printNonlinearRow(), printPBRow(), printQuadraticRow(), printRhsSection(), printRow(), printRowNl(), printSignpowerRow(), printSOCCons(), propagateCons(), propagateCutoffboundBinvar(), propagateCutoffboundGlobally(), propagateCutoffboundVar(), propagateLowerboundVar(), propagateVarbounds(), propIndicator(), proposeFeasibleSolution(), readBounds(), readCoefficients(), readCols(), readColsMop(), readObjective(), readOPBFile(), readRhs(), reduce_contractZeroEdges(), reduce_da(), reduce_extendedEdge(), reduce_simple_mw(), reduce_simple_pc(), reducePcMw(), reduceSPG(), replaceByLinearConstraints(), replaceViolatedByLinearConstraints(), resolvePropagation(), rowprepCleanupSide(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSINITLP(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSPARSE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_NONLINCONSUPGD(), SCIP_DECL_PARAMCHGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_READERREAD(), SCIP_DECL_READERWRITE(), SCIP_DECL_SEPAEXECLP(), SCIPaddCoefPseudoboolean(), SCIPaddQuadVarLinearCoefQuadratic(), SCIPaddRow(), SCIPaddSquareCoefQuadratic(), SCIPaddVarVlb(), SCIPaddVarVub(), SCIPaggrRowAddObjectiveFunction(), SCIPanalyzeDeductionsProbing(), SCIPapplyProximity(), SCIPbendersSetupSubproblem(), SCIPbendersSolSlackVarsActive(), SCIPchgBilinCoefQuadratic(), SCIPchgCoefLinear(), SCIPchgLinearCoefQuadratic(), SCIPchgReoptObjective(), SCIPchgSquareCoefQuadratic(), SCIPcomputeBilinEnvelope1(), SCIPcreateConsAbspower(), SCIPcreateConsIndicator(), SCIPcreateConsNonlinear(), SCIPcreateConsNonlinear2(), SCIPcreateConsOrbitope(), SCIPcreateConsQuadratic(), SCIPcreateNlpiProb(), SCIPgetVectorEfficacyNorm(), SCIPisObjIntegral(), SCIPmakeIndicatorFeasible(), SCIPperformGenericDivingAlgorithm(), SCIPprobdataAddNewSol(), SCIPprobdataPrintGraph(), SCIPprobdataWriteSolution(), SCIPreduceMatrixSize(), SCIPStpDualAscent(), SCIPStpDualAscentPcMw(), SCIPStpHeurAscendPruneRun(), SCIPStpHeurTMRunLP(), SCIPwriteGms(), SCIPwriteLp(), SCIPwriteMps(), SCIPwritePip(), selectShifting(), setupAggregationData(), setupSubproblem(), solCutIsViolated(), solveClassification(), solveDerivativeEquation(), solveMinIISC(), solveSingleRowLP(), solveSubNLP(), storeCutInArrays(), switchNext(), termIsConstant(), tightenCoefs(), tightenVarsBoundsSOS1(), transformColumn(), transformNonIntegralRow(), tryUpgradingXor(), updateBilinearRelaxation(), updateSlacks(), upgradeConss(), writeFzn(), and writeOpbObjective().

◆ SCIPisPositive()

SCIP_EXPORT SCIP_Bool SCIPisPositive	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is greater than epsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 563 of file scip_numerics.c.

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

Referenced by addBilinearTermToCut(), addCoefTerm(), addConflictBinvar(), addLinearizationCuts(), addPathCuts(), aggregateConstraints(), applyAlternativeBoundsBranching(), applyFixings(), polyscip::WeightSpacePolyhedron::areAdjacent(), checkCurvatureEasy(), checkCurvatureExpensive(), checkFactorable(), checkRedundancySide(), chgLhs(), chgRhs(), collectCoefficients(), collectMaxactVar(), combineCols(), computeNextAdjacency(), computeStandardLPFeasibilityCut(), computeStandardLPOptimalityCut(), polyscip::doubledescription::DoubleDescriptionMethod::computeVRep_Var1(), createAndAddLinearCons(), createCGCutDirect(), createMIP(), createNlRow(), cutsSubstituteStrongCG(), cutTightenCoefs(), cutTightenCoefsQuad(), determineBound(), dfs(), doSeparation(), dualBoundStrengthening(), dualPresolve(), evaluateGauge(), extractCapacityRows(), extractFlowRows(), findDaRoots(), findFixings(), fixIntegerVariable(), fixVariableZero(), generate1ConvexIndefiniteUnderestimator(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternA(), generate1ConvexIndefiniteUnderestimatorInTheInteriorPatternB(), generateBoundInequalityFromSOS1Nodes(), generateClusterCuts(), generateConvexConcaveEstimator(), generateCut(), generateCutProjectedPoint(), generateCutSol(), generateCutUnboundedLP(), generateRowCardinality(), generateSecantCut(), generateSecantCutNoCheck(), generateSparseCut(), getBranchingDecisionStrongbranchSOS1(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), initData(), isCandidate(), lockRoundingAndCons(), markPcMwRoots(), nodepairqueueCreate(), performDualfix(), permuteStartSolution(), pertubateEdgeCosts(), predBndStr(), preprocessConstraintPairs(), presolveCreateBenTalNemirovskiApproxDim3(), presolveCreateGlineurApproxDim3(), presolveCreateOuterApprox(), presolveTryAddLinearReform(), printSignpowerRow(), propagateCons(), propagateLowerboundBinvar(), propIndicator(), proposeFeasibleSolution(), reduce_getSdPcMw(), reduce_sdsp(), resolveGenVBoundPropagation(), resolvePropagation(), SCIP_DECL_CONSINITLP(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_DIVESETGETSCORE(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_QUADCONSUPGD(), SCIP_DECL_READERREAD(), SCIP_DECL_SEPAEXECLP(), SCIPaddCoefPseudoboolean(), SCIPapplyLockFixings(), SCIPcalcMIR(), SCIPcalcStrongCG(), SCIPchgReoptObjective(), SCIPcutsTightenCoefficients(), SCIPgenVBoundAdd(), SCIPisConvexAbspower(), SCIPlinkcuttreeFindMinChain(), SCIPStpHeurLocalRun(), SCIPupdateStartpointHeurSubNlp(), SCIPwritePip(), searchEcAggrWithCliques(), selectBranchingVertexByLp(), selectBranchingVertexByLp2Flow(), selectInitialVariableRandomly(), selectShifting(), separateCuts(), separatePerspective(), separatePoint(), setUpEvents(), solveAndEvalSubscip(), solveSingleRowLP(), sortGenVBounds(), storeAllBilinearTerms(), transformAndSolve(), unlockRoundingAndCons(), upgradeLinearSuperindicator(), polyscip::doubledescription::V_RepT::V_RepT(), varMayRoundDown(), and varMayRoundUp().

◆ SCIPisNegative()

SCIP_EXPORT SCIP_Bool SCIPisNegative	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is lower than -epsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 575 of file scip_numerics.c.

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

Referenced by addConcaveEstimatorBivariate(), addConflictBinvar(), adjustCutoffbound(), applyAlternativeBoundsBranching(), polyscip::WeightSpacePolyhedron::areAdjacent(), calcBranchScore(), checkCurvatureEasy(), checkCurvatureExpensive(), checkFactorable(), checkLogCriterion(), collectMinactVar(), combineCols(), computeCut(), computeStandardLPFeasibilityCut(), computeStandardLPOptimalityCut(), polyscip::doubledescription::DoubleDescriptionMethod::computeVRep_Var1(), copySofttimelimit(), createMIP(), createNlRow(), createVarUbs(), cutTightenCoefs(), cutTightenCoefsQuad(), determineBestBounds(), determineBound(), dualPresolve(), dualPresolving(), evaluateGauge(), extractCapacityRows(), extractNodes(), fillGlobalStartingData(), findFixings(), fixIntegerVariable(), fixVariableZero(), generateBoundInequalityFromSOS1Nodes(), generateClusterCuts(), generateCut(), generateCutProjectedPoint(), generateCutUnboundedLP(), generateDisjCutSOS1(), generateEstimatingHyperplane(), generateRowCardinality(), polyscip::doubledescription::V_RepT::hasNonUnitAndNonZeroWeight(), isCandidate(), isRangedRow(), nlrowaggrCreate(), nodepairqueueCreate(), objimplicsCreate(), performDualfix(), predBndStr(), preprocessConstraintPairs(), presolveCreateOuterApprox(), presolveRemoveFixedVariables(), presolveTryAddLinearReform(), ObjPricerVRP::pricing(), pricing(), printSignpowerRow(), propagateCons(), propagateCutoffboundBinvar(), proposeFeasibleSolution(), reduce_getSdPcMw(), reduce_sdsp(), registerBranchingCandidatesGap(), removeDoubleAndSingletonsAndPerformDualpresolve(), SCIP_DECL_CONSINITLP(), SCIP_DECL_EVENTINIT(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_HEUREXEC(), SCIP_DECL_QUADCONSUPGD(), SCIPcalcCumulativeDistribution(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPcutsTightenCoefficients(), SCIPgenVBoundAdd(), SCIPgetReadingTime(), SCIPisConvexAbspower(), SCIPStpHeurLocalRun(), SCIPvarCalcDistributionParameters(), SCIPwritePip(), searchEcAggrWithCliques(), selectShifting(), separatePerspective(), separatePoint(), solveAndEvalSubscip(), solveSingleRowLP(), sortGenVBounds(), storeAllBilinearTerms(), transformAndSolve(), transformColumn(), updateBestCandidate(), updateNodeReplaceBounds(), upgradeLinearSuperindicator(), polyscip::doubledescription::V_RepT::V_RepT(), varMayRoundDown(), and varMayRoundUp().

◆ SCIPisIntegral()

SCIP_EXPORT SCIP_Bool SCIPisIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is integral within epsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 587 of file scip_numerics.c.

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

Referenced by addCoefTerm(), aggregateConstraints(), aggregateVariables(), applyFixings(), assignVars(), buildFlowCover(), calcBranchScore(), cancelCol(), cancelRow(), checkCons(), computeCut(), consdataCheckSuperindicator(), convertBoundToInt(), createAndAddLinearCons(), createNlRow(), createVariables(), enfopsPackingPartitioningOrbitopeSolution(), fixAndPropagate(), flattenFloat(), getFlowCover(), isPartition(), isRangedRow(), parseRange(), presolveTryAddLinearReform(), presolveUpgrade(), prettifyConss(), printLinearCons(), printNLRow(), printPBRow(), printRow(), printSignpowerRow(), printValue(), propIndicator(), readCoefficients(), readExpression(), readIndicators(), readOPBFile(), readPolynomial(), reformMonomial(), reformulate(), runBenders(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_CONSPARSE(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_NONLINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIPaddCoefPseudoboolean(), SCIPaddSquareLinearization(), SCIPaddVarIndicator(), SCIPconsAddCoef(), SCIPcreateConsIndicator(), SCIPisObjIntegral(), SCIPsolveKnapsackExactly(), SCIPwritePip(), tightenBounds(), tightenCoefs(), tightenVariables(), updateBestCandidate(), updateVariableRounding(), writeExpandedSolutions(), writeFzn(), and writeOpbObjective().

◆ SCIPisScalingIntegral()

SCIP_EXPORT SCIP_Bool SCIPisScalingIntegral	(	SCIP *	scip,
		SCIP_Real	val,
		SCIP_Real	scalar
	)

checks whether the product val * scalar is integral in epsilon scaled by scalar

Parameters

scip	SCIP data structure
val	unscaled value to check for scaled integrality
scalar	value to scale val with for checking for integrality

Definition at line 599 of file scip_numerics.c.

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

◆ SCIPisFracIntegral()

SCIP_EXPORT SCIP_Bool SCIPisFracIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if given fractional part is smaller than epsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 612 of file scip_numerics.c.

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

◆ SCIPfloor()

SCIP_EXPORT SCIP_Real SCIPfloor	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value + epsilon down to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 624 of file scip_numerics.c.

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

Referenced by addOneRow(), branchBalancedCardinality(), calcColorValue(), checkCands(), computeFixingrate(), computeMIREfficacy(), createCGMIPprimalsols(), createSubSCIP(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), DECL_CHANGESUBSCIP(), enforceConflictgraph(), enforceConssSOS1(), fixDiscreteVars(), fixVariable(), generateClusterCuts(), generateDisjCutSOS1(), generateLiftedFlowCoverCut(), getCoef(), getNCircles(), handleCycle(), performDualfix(), polishSolution(), predBndStr(), printSignpowerRow(), proposeFeasibleSolution(), readOPBFile(), readVariables(), restrictToBinaryBounds(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSGETDIVEBDCHGS(), SCIP_DECL_CONSINITSOL(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIPaddSquareLinearization(), SCIPaggrRowAddRow(), SCIPanalyzeDeductionsProbing(), SCIPapplyHeurSubNlp(), SCIPseparateRelaxedKnapsack(), SCIPsolveKnapsackExactly(), SCIPwriteGms(), selectNextDiving(), setupSubScip(), tightenVariables(), tightenVarsBoundsSOS1(), transformAndSolve(), tryAdd2variableBuffer(), and updateArcData().

◆ SCIPceil()

SCIP_EXPORT SCIP_Real SCIPceil	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value - epsilon up to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 636 of file scip_numerics.c.

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

Referenced by addOneRow(), checkCands(), computeSVTS(), createObjRow(), createReaderdata(), cutsRoundStrongCG(), cutsSubstituteMIR(), cutsSubstituteStrongCG(), findUncapacitatedArcs(), fixVariable(), forbidFixation(), generateDisjCutSOS1(), generateLiftedFlowCoverCut(), handleCycle(), maxCircles(), performDualfix(), polishSolution(), predBndStr(), proposeFeasibleSolution(), readVariables(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSGETDIVEBDCHGS(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_READERREAD(), SCIP_DECL_SEPAEXECLP(), SCIPaggrRowAddRow(), SCIPanalyzeDeductionsProbing(), SCIPcreateConsIndicator(), SCIPperformGenericDivingAlgorithm(), SCIPwriteGms(), selectNextDiving(), separateCuts(), separateGLS(), separateHeur(), tightenVariables(), tightenVarsBoundsSOS1(), transformAndSolve(), updateArcData(), and visualizeSolutionAscii().

◆ SCIPround()

SCIP_EXPORT SCIP_Real SCIPround	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value to the nearest integer with epsilon tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 648 of file scip_numerics.c.

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

Referenced by applyFixings(), createNlRow(), cutTightenCoefs(), cutTightenCoefsQuad(), flattenFloat(), mod2(), presolveTryAddLinearReform(), printExpr(), printNLRow(), printPBRow(), printRow(), readExpression(), reformMonomial(), reformulate(), rowprepCleanupIntegralCoefs(), SCIP_DECL_EXPRGRAPHNODEREFORM(), SCIP_DECL_HEUREXEC(), SCIP_DECL_NONLINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_READERREAD(), SCIPcalcStrongCG(), SCIPresolveSolHeurSubNlp(), SCIPwritePip(), solveNLP(), visualizeSolutionAscii(), visualizeSolutionGnuplot(), visualizeSolutionMatplotlib(), and writeOpbObjective().

◆ SCIPfrac()

SCIP_EXPORT SCIP_Real SCIPfrac	(	SCIP *	scip,
		SCIP_Real	val
	)

returns fractional part of value, i.e. x - floor(x) in epsilon tolerance

Parameters

scip	SCIP data structure
val	value to return fractional part for

Definition at line 660 of file scip_numerics.c.

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

Referenced by changeSubvariableObjective(), computeCut(), createCGCutCMIR(), createCGCutStrongCG(), createCGMIPprimalsols(), cutsTransformMIR(), generateClusterCuts(), getGMIFromRow(), runVanillaStrongBranching(), and SCIP_DECL_BRANCHEXECLP().

◆ SCIPisSumEQ()

SCIP_EXPORT SCIP_Bool SCIPisSumEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if values are in range of sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 672 of file scip_numerics.c.

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

Referenced by computeVarRatio(), SCIP_DECL_BRANCHEXECLP(), separateSCIs(), transformNonIntegralRow(), and updateBestCandidate().

◆ SCIPisSumLT()

SCIP_EXPORT SCIP_Bool SCIPisSumLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is (more than sumepsilon) lower than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 685 of file scip_numerics.c.

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

Referenced by proposeFeasibleSolution(), solveComponent(), and transformNonIntegralRow().

◆ SCIPisSumLE()

SCIP_EXPORT SCIP_Bool SCIPisSumLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is not (more than sumepsilon) greater than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 698 of file scip_numerics.c.

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

Referenced by filterCandidates(), and getAlphaAndBeta().

◆ SCIPisSumGT()

SCIP_EXPORT SCIP_Bool SCIPisSumGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is (more than sumepsilon) greater than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 711 of file scip_numerics.c.

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

Referenced by constructCompression(), execRelpscost(), SCIP_DECL_BRANCHEXECLP(), transformNonIntegralRow(), and updateBestCandidate().

◆ SCIPisSumGE()

SCIP_EXPORT SCIP_Bool SCIPisSumGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if val1 is not (more than sumepsilon) lower than val2

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 724 of file scip_numerics.c.

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

Referenced by execRelpscost().

◆ SCIPisSumZero()

SCIP_EXPORT SCIP_Bool SCIPisSumZero	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is in range sumepsilon of 0.0

Parameters

scip	SCIP data structure
val	value to process

Definition at line 737 of file scip_numerics.c.

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

Referenced by computeCut().

◆ SCIPisSumPositive()

SCIP_EXPORT SCIP_Bool SCIPisSumPositive	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is greater than sumepsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 749 of file scip_numerics.c.

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

Referenced by calcBranchScore(), computeCut(), and createCGCutCMIR().

◆ SCIPisSumNegative()

SCIP_EXPORT SCIP_Bool SCIPisSumNegative	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is lower than -sumepsilon

Parameters

scip	SCIP data structure
val	value to process

Definition at line 761 of file scip_numerics.c.

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

Referenced by SCIP_DECL_BRANCHEXECLP().

◆ SCIPisFeasEQ()

SCIP_EXPORT SCIP_Bool SCIPisFeasEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of values is in range of feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 773 of file scip_numerics.c.

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

Referenced by addFacetToCut(), addLinearTermToCut(), addLocalBranchingConstraint(), addLocalbranchingConstraintAndObjcutoff(), applyFixings(), applyNlobbt(), applyRepair(), branchUnbalancedCardinality(), calculateAlternatives(), checkAndConss(), checkCons(), checkConsQuadraticProblem(), checkFixedVariables(), checkRikun(), checkSetupTolerances(), chooseDoubleVar(), collectNonBinaryImplicationData(), collectNonBinaryVBoundData(), computeIntegerVariableBounds(), computeIntegerVariableBoundsDins(), computeNogoodCut(), computeRanks(), computeStandardIntegerOptCut(), consdataCheckNonbinvar(), consdataCheckSuperindicator(), consFixLinkvar(), constructCompression(), createAndAddAndCons(), createCGCutDirect(), createConflict(), createCoveringProblem(), createIndicatorConstraint(), createRows(), createSelectedSortedEventpointsSol(), createSubSCIP(), createSubscip(), createSwitchSolution(), CUTOFF_CONSTRAINT(), deleteVarCardinality(), determineBound(), determineFixings(), determineVariableFixings(), doSolveSubMIP(), enforceCardinality(), enforceConstraint(), filterExistingLP(), findPointPosition(), fixAndPropagate(), generate1ConvexIndefiniteUnderestimator(), generate1ConvexIndefiniteUnderestimatorAtBoundary(), generateAverageNBRay(), generateBoundInequalityFromSOS1Nodes(), generateConvexConcaveUnderestimator(), generateCutProjectedPoint(), generateEstimatingHyperplane(), generateNeighborFacets(), generateRowCardinality(), generateZerohalfCut(), getCover(), getNActiveConsScore(), getPartitionNoncovervars(), getSolutionValues(), GUBsetCalcCliquePartition(), handleNewVariableCardinality(), heurExec(), initProblem(), isPossibleToComputeCut(), LOPseparate(), optimize(), performDualfix(), performRandRounding(), phi(), presolRoundCardinality(), presolveAddKKTAggregatedVars(), presolveAddKKTLinearCons(), presolveAddKKTLinearConss(), presolveAddKKTVarboundConss(), presolveFindDuplicatesSolveEquations(), printBoundSection(), processBinvarFixings(), processFixings(), processWatchedVars(), propagateCons(), propagateCutoffboundVar(), propagateRedcostBinvar(), propagateRedcostVar(), propCardinality(), readBinaries(), readBounds(), reboundIntegerVariables(), registerBranchingCandidates(), resolvePropagationCoretimes(), restrictToBinaryBounds(), rowFindSlackVar(), sampleRandomPoints(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOLP(), SCIP_DECL_CONSENFORELAX(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PRICERREDCOST(), SCIPaddBilinearIneqQuadratic(), SCIPaddTrustregionNeighborhoodConstraint(), SCIPaddVarImplication(), SCIPapplyHeurDualval(), SCIPapplyProximity(), SCIPapplyUndercover(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPconvertRealToInt(), SCIPconvertRealToLongint(), SCIPdummyDebugMethodForSun(), SCIPgenerateAndApplyBendersOptCut(), SCIPmakeIndicatorFeasible(), SCIPperformGenericDivingAlgorithm(), SCIProwCalcProbability(), SCIPwriteGms(), SCIPwriteLp(), sep_flow(), separateCons(), separateCuts(), separateIISRounding(), sequentialUpAndDownLifting(), sequentialUpAndDownLiftingGUB(), setAltLPObj(), setObjective(), setRedcosts(), solveAndEvalSubscip(), solveBilinearLP(), solveDerivativeEquation(), switchNext(), termIsConstant(), transformValue(), updateSlacks(), varIsFixed(), and varProcessBoundChanges().

◆ SCIPisFeasLT()

SCIP_EXPORT SCIP_Bool SCIPisFeasLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference val1 and val2 is lower than feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 786 of file scip_numerics.c.

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

Referenced by analyzeGenVBoundConflict(), applyFixings(), applyRepair(), branchBalancedCardinality(), calcBranchScore(), calculateBounds(), checkFixedVariables(), checkKnapsack(), checkOrigPbCons(), checkRowViolation(), checkViolations(), collectNonBinaryVBoundData(), computeCut(), computeVarsCoverSOS1(), countSparseSol(), createCGCutCMIR(), createCGCutStrongCG(), createSubscip(), determineBound(), enforceViolatedFixedNonlinear(), execGenVBounds(), filterPoints(), findPointPosition(), getBoundConsFromVertices(), getCover(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), getMaxactImplicObjchg(), getOptimalShiftingValue(), handleNewVariableSOS2(), improvePoint(), isConsViolated(), optimize(), performImplicationGraphAnalysis(), performStrongbranchSOS1(), preprocessConstraintPairs(), propagateCons(), propagateCutoffboundBinvar(), propagateLowerboundBinvar(), propagateLowerboundVar(), propagateRedcostVar(), proposeFeasibleSolution(), propVariableNonzero(), SCIP_DECL_CONSCHECK(), SCIP_DECL_DISPOUTPUT(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SORTPTRCOMP(), SCIPapplyLockFixings(), SCIPapplyProximity(), SCIPperformGenericDivingAlgorithm(), SCIPprobdataUpdateDualbound(), SCIPseparateRelaxedKnapsack(), SCIPsolveKnapsackApproximatelyLT(), sep_2cut(), sepaImplBoundCutsSOS1(), separateIISRounding(), setupAndSolveFiniteSolSubscip(), setupAndSolveSubscipRapidlearning(), setupProblem(), solvePricingHeuristic(), tightenCoefs(), tightenVarsBoundsSOS1(), tryFixVar(), updateArcData(), updateImplicationGraphSOS1(), updateViolations(), and upgradeCons().

◆ SCIPisFeasLE()

SCIP_EXPORT SCIP_Bool SCIPisFeasLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not greater than feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 799 of file scip_numerics.c.

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

Referenced by addConcaveEstimatorBivariate(), addConcaveEstimatorMultivariate(), addConflictBounds(), applyRepair(), branchruledataUpdateCurrentBounds(), buildFlowCover(), calcShiftVal(), checkBounddisjunction(), checkCons(), checkConsQuadraticProblem(), checkConstraintMatching(), checkRowViolation(), checkViolations(), collectNonBinaryImplicationData(), computeReferencePointGauge(), computeViolation(), consFixLinkvar(), constructSNFRelaxation(), createSubscip(), cutTightenCoefs(), cutTightenCoefsQuad(), determineBound(), evaluateLiftingFunction(), filterCands(), filterExistingLP(), findDominancePairs(), generateConvexConcaveUnderestimator(), generateCut(), generateCutFactorableDo(), generateCutLTIcomputeCoefs(), generateDisjCutSOS1(), generateEstimatingHyperplane(), generateNeighborFacets(), generateOrthogonal_lx_ly_Underestimator(), generateUnderestimatorParallelYFacets(), getFeasibleSet(), getFlowCover(), getOptimalShiftingValue(), heurdataUpdateCurrentBounds(), heurExec(), isConsViolated(), isDisplaySol(), optimize(), performRandRounding(), presolveDual(), presolveRemoveFixedVariables(), propagateCons(), propagateRootRedcostVar(), registerBranchingCandidates(), replaceViolatedByLinearConstraints(), rowCalculateGauss(), sampleRandomPoints(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIPaddBilinearIneqQuadratic(), SCIPapplyHeurDualval(), SCIPapplyLockFixings(), SCIPapplyProximity(), SCIPcalcCumulativeDistribution(), SCIPcheckPattern(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPcutsTightenCoefficients(), SCIPperformGenericDivingAlgorithm(), SCIProwCalcProbability(), SCIPupdateDistributionScore(), separateCuts(), setObjective(), setupAndSolveSubscipRapidlearning(), shiftValues(), solveAndEvalSubscip(), tightenBounds(), tightenCoefs(), transformVariable(), tryToInsert(), updateBestCandidate(), updateBilinearRelaxation(), updateSlacks(), and updateVariableRounding().

◆ SCIPisFeasGT()

SCIP_EXPORT SCIP_Bool SCIPisFeasGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is greater than feastol

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 812 of file scip_numerics.c.

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

Referenced by addGenVBound(), analyzeGenVBoundConflict(), applyFixings(), applyRepair(), buildFlowCover(), checkFixedVariables(), checkOrigPbCons(), checkRowViolation(), checkViolations(), collectNonBinaryVBoundData(), computeCut(), createCGCutCMIR(), createCGCutDirect(), createCGCutStrongCG(), createSubscip(), determineBound(), enforceCardinality(), enforceViolatedFixedNonlinear(), findPointPosition(), generateClusterCuts(), generateNeighborFacets(), getCover(), getFlowCover(), getMaxactImplicObjchg(), getOptimalShiftingValue(), getPartitionCovervars(), getPartitionNoncovervars(), handleNewVariableSOS2(), initMatrix(), makeSOS1constraintsFeasible(), optimize(), performImplicationGraphAnalysis(), performStrongbranchSOS1(), propagateCons(), propagateLowerboundVar(), proposeFeasibleSolution(), propVariableNonzero(), relaxVar(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOLP(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PRICERREDCOST(), SCIP_DECL_SEPAEXECLP(), SCIP_DECL_SORTPTRCOMP(), SCIPapplyLockFixings(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPperformGenericDivingAlgorithm(), SCIPseparateRelaxedKnapsack(), SCIPsolveKnapsackApproximately(), sep_flow(), sepaImplBoundCutsSOS1(), separateCons(), separateSupLiftedMinimalCoverInequality(), sequentialUpAndDownLifting(), setupAndSolveFiniteSolSubscip(), shiftValues(), tightenCoefs(), tightenVarsBoundsSOS1(), tryFixVar(), tryToInsert(), updateArcData(), updateImplicationGraphSOS1(), updateViolations(), and upgradeCons().

◆ SCIPisFeasGE()

SCIP_EXPORT SCIP_Bool SCIPisFeasGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not lower than -feastol

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 825 of file scip_numerics.c.

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

Referenced by addConcaveEstimatorBivariate(), addConcaveEstimatorMultivariate(), addConflictBounds(), buildFlowCover(), calcShiftVal(), checkBounddisjunction(), checkCons(), checkConsQuadraticProblem(), checkRowViolation(), checkViolations(), collectNonBinaryImplicationData(), computeViolation(), constructSNFRelaxation(), cut_add(), determineBound(), dfs(), extractVariablesMINLP(), filterCands(), filterExistingLP(), filterPoints(), findDominancePairs(), forbidCover(), generateConvexConcaveUnderestimator(), generateCut(), generateCutLTIcomputeCoefs(), generateNeighborFacets(), generateOrthogonal_lx_ly_Underestimator(), generateUnderestimatorParallelYFacets(), getFeasibleSet(), getFlowCover(), improvePoint(), isConsViolated(), optimize(), performRandRounding(), presolveDual(), propagateCons(), propagateRootRedcostVar(), propIndicator(), registerBranchingCandidates(), sampleRandomPoints(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRICERREDCOST(), SCIPapplyLockFixings(), SCIPapplyProximity(), SCIPcheckPattern(), SCIPcomputeBilinEnvelope1(), SCIPcomputeBilinEnvelope2(), SCIPmakeIndicatorFeasible(), SCIPperformGenericDivingAlgorithm(), SCIProwCalcProbability(), SCIPsolveKnapsackApproximatelyLT(), SCIPupdateDistributionScore(), sep_2cut(), separateCuts(), separateSupLiftedMinimalCoverInequality(), setObjective(), shiftValues(), solveAndEvalSubscip(), tightenBounds(), tightenCoefs(), tryToInsert(), updateBestCandidate(), updateBilinearRelaxation(), updateSlacks(), and varProcessBoundChanges().

◆ SCIPisFeasZero()

SCIP_EXPORT SCIP_Bool SCIPisFeasZero	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is in range feasibility tolerance of 0.0

Parameters

scip	SCIP data structure
val	value to process

Definition at line 838 of file scip_numerics.c.

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

Referenced by addAltLPColumn(), addBranchingComplementaritiesSOS1(), addGenVBound(), addOneRow(), aggregateNextRow(), applyRepair(), BENDERS_CUTORACLE(), branchBalancedCardinality(), branchUnbalancedCardinality(), buildFlowCover(), calculateAlternatives(), checkAndConss(), checkCons(), checkConsQuadraticProblem(), checkIISlocal(), checkLinearConssVarboundSOS1(), checkLPBoundsClean(), checkOrigPbCons(), checkPackingPartitioningOrbitopeSolution(), checkSwitchNonoverlappingSOS1Methods(), computeInteriorPoint(), computeMIREfficacy(), createAltLPColumn(), createAndAddAndCons(), createCGMIPprimalsols(), createConflict(), createKKTComplementarityBounds(), detectVarboundSOS1(), determineBound(), enforceCardinality(), enforceConflictgraph(), enforceConssSOS1(), enforceCuts(), enforceIndicators(), enforceSol(), enforceSOS2(), extendToCover(), fixVariableZeroNode(), generateAverageNBRay(), generateAverageRay(), generateClusterCuts(), generateDisjCutSOS1(), generateRowSOS2(), getBranchingPrioritiesSOS1(), getBranchingVerticesSOS1(), getDiveBdChgsSOS1constraints(), getFlowCover(), getGMIFromRow(), getSimplexCoefficients(), getVectorOfWeights(), initConflictgraph(), initMatrix(), isSolFeasible(), isViolatedSOS1(), isZero(), makeSOS1conflictgraphFeasible(), makeSOS1constraintsFeasible(), markNeighborsMWISHeuristic(), polishPrimalSolution(), preprocessConstraintPairs(), presolRoundCardinality(), presolRoundConsSOS1(), presolRoundIndicator(), presolRoundSOS2(), presolveAddKKTAggregatedVars(), presolveAddKKTQuadBilinearTerms(), presolveAddKKTQuadLinearTerms(), presolveAddKKTQuadQuadraticTerms(), printBoundSection(), processBinvarFixings(), processFixings(), propagateVarbounds(), propCardinality(), propIndicator(), propVariableNonzero(), readBinaries(), registerBranchingVariables(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONFLICTEXEC(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSPROP(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PARAMCHGD(), SCIP_DECL_PRICERFARKAS(), SCIP_DECL_SEPAEXECLP(), SCIPaddBilinearIneqQuadratic(), SCIPaddVarImplication(), SCIPapplyProximity(), SCIPcalcCumulativeDistribution(), SCIPdummyDebugMethodForSun(), SCIPinitVarBranchStats(), SCIPinitVarValueBranchStats(), SCIPmakeIndicatorFeasible(), SCIPprintSolutionStatistics(), SCIPselectVarStrongBranching(), sepaImplBoundCutsSOS1(), separateCuts(), separateIISRounding(), setObjective(), setRedcosts(), setupAndSolveSubscip(), setupSubScip(), solveBilinearLP(), tightenVarsBoundsSOS1(), transformVariable(), tryFixVar(), updateImplicationGraphSOS1(), updateTransformation(), and updateWeightsTCliquegraph().

◆ SCIPisFeasPositive()

SCIP_EXPORT SCIP_Bool SCIPisFeasPositive	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is greater than feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 850 of file scip_numerics.c.

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

Referenced by addBranchingComplementaritiesSOS1(), branchBalancedCardinality(), branchUnbalancedCardinality(), checkCons(), checkConsQuadraticProblem(), computeBranchingPriorities(), computeCut(), consdataCreate(), createCGCutCMIR(), createCGCutStrongCG(), detectVarboundSOS1(), enforceCardinality(), extractCycle(), fixVariableZeroNode(), generateAverageNBRay(), generateBoundInequalityFromSOS1Cons(), generateClusterCuts(), generateCutFactorable(), generateCutLTI(), generateDisjCutSOS1(), generateLinearizationCutProject(), generateNeighborFacets(), generateSecantCut(), getBoundConsFromVertices(), getCover(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), getNActiveConsScore(), getNCircles(), getScore(), getScoreLikeCoefdiving(), getSOS1Implications(), getVariableRedcostScore(), getVectorOfWeights(), handleNewVariableSOS1(), handleNewVariableSOS2(), inferVariableZero(), initMatrix(), lockVariableCardinality(), lockVariableSOS2(), makeSOS1conflictgraphFeasible(), makeSOS1constraintsFeasible(), nodeGetSolvalBinaryBigMSOS1(), nodepartitionIsConnected(), performImplicationGraphAnalysis(), preprocessConstraintPairs(), presolRoundCardinality(), presolRoundConsSOS1(), presolRoundIndicator(), presolRoundSOS2(), propCardinality(), propConsSOS1(), propIndicator(), proposeBranchingPoint(), propSOS2(), propVariableNonzero(), relaxVar(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_CONSTRANS(), SCIP_DECL_DIVESETGETSCORE(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), SCIPisViolatedIndicator(), SCIPmakeIndicatorFeasible(), tightenVarsBoundsSOS1(), unlockVariableCardinality(), unlockVariableSOS2(), updateImplicationGraphSOS1(), and updateWeightsTCliquegraph().

◆ SCIPisFeasNegative()

SCIP_EXPORT SCIP_Bool SCIPisFeasNegative	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is lower than -feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 862 of file scip_numerics.c.

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

Referenced by addBranchingComplementaritiesSOS1(), branchBalancedCardinality(), branchUnbalancedCardinality(), checkConsQuadraticProblem(), computeCut(), computeInteriorPoint(), createCGCutCMIR(), createCGCutStrongCG(), detectVarboundSOS1(), enforceCardinality(), enforceIndicators(), extendToCover(), extractCycle(), fixVariableZeroNode(), generateAverageNBRay(), generateBoundInequalityFromSOS1Cons(), generateCutFactorable(), generateCutLTI(), generateLinearizationCut(), generateLinearizationCutProject(), getBoundConsFromVertices(), getDiveBdChgsSOS1conflictgraph(), getDiveBdChgsSOS1constraints(), getNActiveConsScore(), getNCircles(), getScore(), getScoreLikeCoefdiving(), getSOS1Implications(), getVariableRedcostScore(), handleNewVariableSOS1(), handleNewVariableSOS2(), inferVariableZero(), initMatrix(), lockVariableCardinality(), lockVariableSOS2(), makeSOS1conflictgraphFeasible(), makeSOS1constraintsFeasible(), nodeGetSolvalBinaryBigMSOS1(), performImplicationGraphAnalysis(), preprocessConstraintPairs(), presolRoundCardinality(), presolRoundConsSOS1(), presolRoundSOS2(), propCardinality(), propConsSOS1(), proposeBranchingPoint(), propSOS2(), propVariableNonzero(), registerBranchingCandidatesGap(), relaxVar(), rowCalculateGauss(), SCIP_DECL_CONSLOCK(), SCIP_DECL_CONSPRESOL(), SCIP_DECL_CONSRESPROP(), SCIP_DECL_CONSTRANS(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_SEPAEXECLP(), SCIPmakeIndicatorFeasible(), sep_flow(), sepaImplBoundCutsSOS1(), separateCons(), separateConsBinaryRepresentation(), separateCoverCutsCons(), separateIndicators(), solvePricingHeuristic(), tightenVarsBoundsSOS1(), unlockVariableCardinality(), unlockVariableSOS2(), updateImplicationGraphSOS1(), and updateWeightsTCliquegraph().

◆ SCIPisFeasIntegral()

SCIP_EXPORT SCIP_Bool SCIPisFeasIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is integral within the LP feasibility bounds

Parameters

scip	SCIP data structure
val	value to process

Definition at line 874 of file scip_numerics.c.

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

Referenced by addGLSCliques(), addLocalBranchingConstraint(), addLocalbranchingConstraintAndObjcutoff(), addNextLevelCliques(), BENDERS_CUTORACLE(), buildFlowCover(), checkCands(), checkCons(), checkCumulativeCondition(), checkPackingPartitioningOrbitopeSolution(), checkRedundancySide(), checkSymresackSolution(), chooseDoubleVar(), computeFixingrate(), countSparseSol(), createAndAddLinearCons(), createCGCutDirect(), createCoreProfile(), createNormalizedKnapsack(), createSelectedSortedEventpointsSol(), createSubscip(), CUTOFF_CONSTRAINT(), cutsSubstituteMIR(), cutTightenCoefs(), cutTightenCoefsQuad(), DECL_CHANGESUBSCIP(), DECL_VARFIXINGS(), determineBound(), enforceCuts(), execRelpscost(), fixAndPropagate(), fixVariable(), generateZerohalfCut(), getBranchCands(), getFlowCover(), getHighestCapacityUsage(), getNLPFracVars(), getVariableRedcostScore(), handle1Cycle(), handleCycle(), heurExec(), insertSortedRootNeighbors(), mod2(), nodepartitionIsConnected(), optimize(), performFixing(), performRandRounding(), performRelaxSimpleRounding(), performSimpleRounding(), propagateCons(), readBounds(), readGenerals(), resolvePropagationCoretimes(), restrictToBinaryBounds(), roundFixingValue(), runVanillaStrongBranching(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_CONSCHECK(), SCIP_DECL_CONSENFOPS(), SCIP_DECL_CONSENFORELAX(), SCIP_DECL_CONSEXIT(), SCIP_DECL_CONSGETDIVEBDCHGS(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_SEPAEXECSOL(), SCIPaddTrustregionNeighborhoodConstraint(), SCIPapplyHeurSubNlp(), SCIPapplyProximity(), SCIPcheckSolutionOrbisack(), SCIPconvertRealToInt(), SCIPconvertRealToLongint(), SCIPcutGenerationHeuristicCMIR(), SCIPresolveSolHeurSubNlp(), SCIPselectVarPseudoStrongBranching(), SCIPwriteCliqueGraph(), selectEssentialRounding(), selectRounding(), selectShifting(), selectVarMultAggrBranching(), separateCuts(), separateGLS(), separateHeur(), separateOddCycles(), solveNLP(), tightenBounds(), tightenCoefs(), tryAdd2variableBuffer(), writeFzn(), writeOpbFixedVars(), and writeOpbRelevantAnds().

◆ SCIPisFeasFracIntegral()

SCIP_EXPORT SCIP_Bool SCIPisFeasFracIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if given fractional part is smaller than feastol

Parameters

scip	SCIP data structure
val	value to process

Definition at line 886 of file scip_numerics.c.

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

◆ SCIPfeasFloor()

SCIP_EXPORT SCIP_Real SCIPfeasFloor	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value + feasibility tolerance down to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 898 of file scip_numerics.c.

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

Referenced by addOrigRow(), addTrustRegionConstraints(), aggregateVariables(), buildMod2Matrix(), calcBranchScore(), calcPscostQuot(), calcShiftVal(), checkRedundancySide(), chooseDoubleVar(), computeCut(), computeIntegerVariableBounds(), computeIntegerVariableBoundsDins(), createAndAddLinearCons(), createNormalizedKnapsack(), createSubscip(), determineBound(), enforceSOS2(), execRelpscost(), executeBranchingRecursive(), generateZerohalfCut(), getNCircles(), getOptimalShiftingValue(), getZiValue(), handle1Cycle(), performRandRounding(), performSimpleRounding(), restrictToBinaryBounds(), roundFixingValue(), SCIP_DECL_HEUREXEC(), SCIP_DECL_LINCONSUPGD(), SCIP_DECL_PRESOLEXEC(), SCIPapplyProximity(), SCIPgetVarStrongbranchWithPropagation(), SCIPselectVarPseudoStrongBranching(), SCIPselectVarStrongBranching(), SCIPseparateRelaxedKnapsack(), SCIPwriteGms(), selectEssentialRounding(), selectRounding(), selectShifting(), selectVarMultAggrBranching(), tightenBounds(), tightenCoefs(), transformNonIntegralRow(), and updateTcliquegraph().

◆ SCIPfeasCeil()

SCIP_EXPORT SCIP_Real SCIPfeasCeil	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value - feasibility tolerance up to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 910 of file scip_numerics.c.

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

Referenced by addGLSCliques(), addNextLevelCliques(), addOrigRow(), branchruledataEnsureArraySize(), buildMod2Matrix(), calcBranchScore(), checkRedundancySide(), chooseDoubleVar(), computeCut(), computeEstOmegaset(), computeIntegerVariableBounds(), computeIntegerVariableBoundsDins(), createSubscip(), execRelpscost(), executeBranchingRecursive(), getOptimalShiftingValue(), getZiValue(), handle1Cycle(), heurdataEnsureArraySize(), insertSortedRootNeighbors(), performFixing(), performRandRounding(), performSimpleRounding(), resolveGenVBoundPropagation(), restrictToBinaryBounds(), roundFixingValue(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_PRICERREDCOST(), SCIPapplyProximity(), SCIPapplyUndercover(), SCIPgetVarStrongbranchWithPropagation(), SCIPselectVarPseudoStrongBranching(), SCIPselectVarStrongBranching(), selectEssentialRounding(), selectRounding(), selectShifting(), selectVarMultAggrBranching(), setupProblem(), tightenBounds(), tightenCoefs(), and updateObjUpperbound().

◆ SCIPfeasRound()

SCIP_EXPORT SCIP_Real SCIPfeasRound	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value to the nearest integer in feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 922 of file scip_numerics.c.

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

Referenced by generateZerohalfCut(), heurExec(), and sampleRandomPoints().

◆ SCIPfeasFrac()

SCIP_EXPORT SCIP_Real SCIPfeasFrac	(	SCIP *	scip,
		SCIP_Real	val
	)

returns fractional part of value, i.e. x - floor(x)

returns fractional part of value, i.e. x - floor(x) in feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 934 of file scip_numerics.c.

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

Referenced by createCGMIPprimalsols(), createSubproblem(), execRelpscost(), getGMIFromRow(), handleCycle(), roundFixingValue(), SCIP_DECL_SEPAEXECLP(), and separateCuts().

◆ SCIPisDualfeasEQ()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of values is in range of dual feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 946 of file scip_numerics.c.

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

◆ SCIPisDualfeasLT()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference val1 and val2 is lower than dual feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 959 of file scip_numerics.c.

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

◆ SCIPisDualfeasLE()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not greater than dual feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 972 of file scip_numerics.c.

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

Referenced by propagateLowerboundBinvar().

◆ SCIPisDualfeasGT()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is greater than dual feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 985 of file scip_numerics.c.

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

◆ SCIPisDualfeasGE()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not lower than -dual feasibility tolerance

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 998 of file scip_numerics.c.

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

◆ SCIPisDualfeasZero()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasZero	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is in range dual feasibility tolerance of 0.0

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1011 of file scip_numerics.c.

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

Referenced by computeStandardLPFeasibilityCut(), countNonZeroRootRedcostVars(), createRows(), determineVariableFixings(), getVariableRedcostScore(), propagateRedcostBinvar(), propagateRedcostVar(), propagateRootRedcostBinvar(), propagateRootRedcostVar(), propdataInit(), SCIP_DECL_HEUREXEC(), and setRedcosts().

◆ SCIPisDualfeasPositive()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasPositive	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is greater than dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1023 of file scip_numerics.c.

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

Referenced by getVariableRedcostScore(), propagateRedcostBinvar(), propagateRedcostVar(), propagateRootRedcostBinvar(), propagateRootRedcostVar(), SCIP_DECL_HEUREXEC(), and setRedcosts().

◆ SCIPisDualfeasNegative()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasNegative	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is lower than -dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1035 of file scip_numerics.c.

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

Referenced by getVariableRedcostScore(), propagateRedcostBinvar(), propagateRedcostVar(), propagateRootRedcostBinvar(), propagateRootRedcostVar(), SCIP_DECL_HEUREXEC(), and setRedcosts().

◆ SCIPisDualfeasIntegral()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if value is integral within the LP dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1047 of file scip_numerics.c.

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

◆ SCIPisDualfeasFracIntegral()

SCIP_EXPORT SCIP_Bool SCIPisDualfeasFracIntegral	(	SCIP *	scip,
		SCIP_Real	val
	)

checks, if given fractional part is smaller than dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1059 of file scip_numerics.c.

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

◆ SCIPdualfeasFloor()

SCIP_EXPORT SCIP_Real SCIPdualfeasFloor	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value + dual feasibility tolerance down to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1071 of file scip_numerics.c.

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

◆ SCIPdualfeasCeil()

SCIP_EXPORT SCIP_Real SCIPdualfeasCeil	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value - dual feasibility tolerance up to the next integer

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1083 of file scip_numerics.c.

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

◆ SCIPdualfeasRound()

SCIP_EXPORT SCIP_Real SCIPdualfeasRound	(	SCIP *	scip,
		SCIP_Real	val
	)

rounds value to the nearest integer in dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1095 of file scip_numerics.c.

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

◆ SCIPdualfeasFrac()

SCIP_EXPORT SCIP_Real SCIPdualfeasFrac	(	SCIP *	scip,
		SCIP_Real	val
	)

returns fractional part of value, i.e. x - floor(x) in dual feasibility tolerance

Parameters

scip	SCIP data structure
val	value to process

Definition at line 1107 of file scip_numerics.c.

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

◆ SCIPisLbBetter()

SCIP_EXPORT SCIP_Bool SCIPisLbBetter	(	SCIP *	scip,
		SCIP_Real	newlb,
		SCIP_Real	oldlb,
		SCIP_Real	oldub
	)

checks, if the given new lower bound is tighter (w.r.t. bound strengthening epsilon) than the old one

checks, if the given new lower bound is at least min(oldub - oldlb, |oldlb|) times the bound strengthening epsilon better than the old one

Parameters

scip	SCIP data structure
newlb	new lower bound
oldlb	old lower bound
oldub	old upper bound

Definition at line 1121 of file scip_numerics.c.

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

Referenced by performFixing(), propagateCons(), and SCIPanalyzeDeductionsProbing().

◆ SCIPisUbBetter()

SCIP_EXPORT SCIP_Bool SCIPisUbBetter	(	SCIP *	scip,
		SCIP_Real	newub,
		SCIP_Real	oldlb,
		SCIP_Real	oldub
	)

checks, if the given new upper bound is tighter (w.r.t. bound strengthening epsilon) than the old one

checks, if the given new upper bound is at least min(oldub - oldlb, |oldub|) times the bound strengthening epsilon better than the old one

Parameters

scip	SCIP data structure
newub	new upper bound
oldlb	old lower bound
oldub	old upper bound

Definition at line 1136 of file scip_numerics.c.

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

Referenced by performFixing(), propagateCons(), and SCIPanalyzeDeductionsProbing().

◆ SCIPisRelEQ()

SCIP_EXPORT SCIP_Bool SCIPisRelEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of values is in range of epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1149 of file scip_numerics.c.

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

Referenced by addConcaveEstimatorBivariate(), checkFactorable(), fixAlmostFixedX(), generateCutLTI(), generateCutLTIfindIntersection(), generateSecantCut(), generateSecantCutNoCheck(), presolveUpgrade(), propagateCons(), registerBranchingCandidates(), registerBranchingCandidatesCentrality(), registerBranchingCandidatesGap(), registerBranchingCandidatesViolation(), registerBranchingVariables(), registerLargeRelaxValueVariableForBranching(), replaceByLinearConstraints(), replaceViolatedByLinearConstraints(), SCIP_DECL_CONSENFOPS(), SCIP_DECL_CONSINITLP(), SCIPaddBilinMcCormick(), SCIPbranchVarVal(), SCIPbranchVarValNary(), SCIPcomputeBilinEnvelope2(), SCIPcomputeHyperplaneThreePoints(), SCIPisLinearLocalQuadratic(), and solveDerivativeEquation().

◆ SCIPisRelLT()

SCIP_EXPORT SCIP_Bool SCIPisRelLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is lower than epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1162 of file scip_numerics.c.

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

Referenced by updateBilinearRelaxation().

◆ SCIPisRelLE()

SCIP_EXPORT SCIP_Bool SCIPisRelLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not greater than epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1175 of file scip_numerics.c.

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

Referenced by addConcaveEstimatorBivariate(), addLinearConstraints(), and generateCutNonConvex().

◆ SCIPisRelGT()

SCIP_EXPORT SCIP_Bool SCIPisRelGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is greater than epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1188 of file scip_numerics.c.

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

Referenced by SCIPupdateStartpointHeurSubNlp(), selectVarRecursive(), and updateBilinearRelaxation().

◆ SCIPisRelGE()

SCIP_EXPORT SCIP_Bool SCIPisRelGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not lower than -epsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1201 of file scip_numerics.c.

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

Referenced by generateCutNonConvex().

◆ SCIPisSumRelEQ()

SCIP_EXPORT SCIP_Bool SCIPisSumRelEQ	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of values is in range of sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1214 of file scip_numerics.c.

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

◆ SCIPisSumRelLT()

SCIP_EXPORT SCIP_Bool SCIPisSumRelLT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is lower than sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1227 of file scip_numerics.c.

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

◆ SCIPisSumRelLE()

SCIP_EXPORT SCIP_Bool SCIPisSumRelLE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is not greater than sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1240 of file scip_numerics.c.

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

◆ SCIPisSumRelGT()

SCIP_EXPORT SCIP_Bool SCIPisSumRelGT	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

checks, if relative difference of val1 and val2 is greater than sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1253 of file scip_numerics.c.

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

◆ SCIPisSumRelGE()

SCIP_EXPORT SCIP_Bool SCIPisSumRelGE	(	SCIP *	scip,
		SCIP_Real	val1,
		SCIP_Real	val2
	)

! [SnippetCodeStyleNaming] checks, if relative difference of val1 and val2 is not lower than -sumepsilon

checks, if relative difference of val1 and val2 is not lower than -sumepsilon

Parameters

scip	SCIP data structure
val1	first value to be compared
val2	second value to be compared

Definition at line 1266 of file scip_numerics.c.

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

◆ SCIPconvertRealToInt()

SCIP_EXPORT int SCIPconvertRealToInt	(	SCIP *	scip,
		SCIP_Real	real
	)

converts the given real number representing an integer to an int; in optimized mode the function gets inlined for performance; in debug mode we check some additional conditions

Parameters

scip	SCIP data structure
real	double bound to convert

Definition at line 1281 of file scip_numerics.c.

References SCIP_Real, SCIPisFeasEQ(), and SCIPisFeasIntegral().

Referenced by adjustOversizedJobBounds(), analyzeEnergyRequirement(), applyAlternativeBoundsBranching(), applyAlternativeBoundsFixing(), checkCons(), checkCumulativeCondition(), checkOverloadViaThetaTree(), collectBinaryVars(), collectBranchingCands(), collectDataTTEF(), collectDemands(), collectIntVars(), computeAlternativeBounds(), computeImpliedEst(), computeImpliedLct(), computeMinDistance(), consCheckRedundancy(), consdataCreateBinvars(), constraintNonOverlappingGraph(), coretimesUpdateLb(), coretimesUpdateUb(), createCoreProfile(), createCoverCuts(), createCoverCutsTimepoint(), createSelectedSortedEventpointsSol(), createSortedEventpoints(), createSortedEventpointsSol(), getActiveVar(), getHighestCapacityUsage(), presolveConsEffectiveHorizon(), presolveConsEst(), presolveConsLct(), propagateLbTTEF(), propagateTimetable(), propagateTTEF(), propagateUbTTEF(), removeIrrelevantJobs(), resolvePropagationCoretimes(), respropCumulativeCondition(), SCIP_DECL_CONSPARSE(), SCIPcreateWorstCaseProfile(), strengthenVarbounds(), tightenCoefs(), tightenLbTTEF(), and tightenUbTTEF().

◆ SCIPconvertRealToLongint()

SCIP_EXPORT SCIP_Longint SCIPconvertRealToLongint	(	SCIP *	scip,
		SCIP_Real	real
	)

! [SnippetCodeStyleNaming] converts the given real number representing an integer to a long integer; in optimized mode the function gets inlined for performance; in debug mode we check some additional conditions

converts the given real number representing an integer to a long integer; in optimized mode the function gets inlined for performance; in debug mode we check some additional conditions

Parameters

scip	SCIP data structure
real	double bound to convert

Definition at line 1297 of file scip_numerics.c.

References SCIP_Longint, SCIP_LONGINT_MAX, SCIP_LONGINT_MIN, SCIP_Real, SCIPisFeasEQ(), and SCIPisFeasIntegral().

Referenced by collectSolution(), and printValue().

◆ SCIPisUpdateUnreliable()

SCIP_EXPORT SCIP_Bool SCIPisUpdateUnreliable	(	SCIP *	scip,
		SCIP_Real	newvalue,
		SCIP_Real	oldvalue
	)

Checks, if an iteratively updated value is reliable or should be recomputed from scratch. This is useful, if the value, e.g., the activity of a linear constraint or the pseudo objective value, gets a high absolute value during the optimization process which is later reduced significantly. In this case, the last digits were canceled out when increasing the value and are random after decreasing it. We do not consider the cancellations which can occur during increasing the absolute value because they just cannot be expressed using fixed precision floating point arithmetic, anymore. In order to get more reliable values, the idea is to always store the last reliable value, where increasing the absolute of the value is viewed as preserving reliability. Then, after each update, the new absolute value can be compared against the last reliable one with this method, checking whether it was decreased by a factor of at least "lp/recompfac" and should be recomputed.

Parameters

scip	SCIP data structure
newvalue	new value after update
oldvalue	old value, i.e., last reliable value

Definition at line 1321 of file scip_numerics.c.

References FALSE, NULL, SCIP_CALL_ABORT, SCIPcheckStage(), SCIPsetIsUpdateUnreliable(), Scip::set, and TRUE.

◆ SCIPprintReal()

SCIP_EXPORT void SCIPprintReal	(	SCIP *	scip,
		FILE *	file,
		SCIP_Real	val,
		int	width,
		int	precision
	)

outputs a real number, or "+infinity", or "-infinity" to a file

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
val	value to print
width	width of the field
precision	number of significant digits printed

Definition at line 370 of file scip_numerics.c.

References Scip::messagehdlr, NULL, SCIP_MAXSTRLEN, SCIPmessageFPrintInfo(), SCIPsetIsInfinity(), SCIPsnprintf(), and Scip::set.

Referenced by SCIPprintMIPStart(), SCIPprintSol(), and SCIPprintTransSol().

◆ SCIPparseReal()

SCIP_EXPORT SCIP_Bool SCIPparseReal	(	SCIP *	scip,
		const char *	str,
		SCIP_Real *	value,
		char **	endptr
	)

parse a real value that was written with SCIPprintReal()

Parameters

scip	SCIP data structure
str	string to search
value	pointer to store the parsed value
endptr	pointer to store the final string position if successfully parsed, otherwise `str`

Definition at line 397 of file scip_numerics.c.

References NULL, SCIPinfinity(), SCIPstrToRealValue(), and TRUE.

Referenced by SCIP_DECL_DIALOGEXEC(), and SCIPprocessShellArguments().

SCIP

Detailed Description

Functions

Function Documentation

◆ SCIPepsilon()

◆ SCIPsumepsilon()

◆ SCIPfeastol()

◆ SCIPlpfeastol()

◆ SCIPdualfeastol()

◆ SCIPbarrierconvtol()

◆ SCIPcutoffbounddelta()

◆ SCIPrelaxfeastol()

◆ SCIPchgFeastol()

◆ SCIPchgLpfeastol()

◆ SCIPchgDualfeastol()

◆ SCIPchgBarrierconvtol()

◆ SCIPchgRelaxfeastol()

◆ SCIPmarkLimitChanged()

◆ SCIPinfinity()

◆ SCIPgetHugeValue()

◆ SCIPisEQ()

◆ SCIPisLT()

◆ SCIPisLE()

◆ SCIPisGT()

◆ SCIPisGE()

◆ SCIPisInfinity()

◆ SCIPisHugeValue()

◆ SCIPisZero()

◆ SCIPisPositive()

◆ SCIPisNegative()

◆ SCIPisIntegral()

◆ SCIPisScalingIntegral()

◆ SCIPisFracIntegral()

◆ SCIPfloor()

◆ SCIPceil()

◆ SCIPround()

◆ SCIPfrac()

◆ SCIPisSumEQ()

◆ SCIPisSumLT()

◆ SCIPisSumLE()

◆ SCIPisSumGT()

◆ SCIPisSumGE()

◆ SCIPisSumZero()

◆ SCIPisSumPositive()

◆ SCIPisSumNegative()

◆ SCIPisFeasEQ()

◆ SCIPisFeasLT()

◆ SCIPisFeasLE()

◆ SCIPisFeasGT()

◆ SCIPisFeasGE()

◆ SCIPisFeasZero()

◆ SCIPisFeasPositive()

◆ SCIPisFeasNegative()

◆ SCIPisFeasIntegral()

◆ SCIPisFeasFracIntegral()

◆ SCIPfeasFloor()

◆ SCIPfeasCeil()

◆ SCIPfeasRound()

◆ SCIPfeasFrac()

◆ SCIPisDualfeasEQ()

◆ SCIPisDualfeasLT()

◆ SCIPisDualfeasLE()

◆ SCIPisDualfeasGT()

◆ SCIPisDualfeasGE()

◆ SCIPisDualfeasZero()

◆ SCIPisDualfeasPositive()

◆ SCIPisDualfeasNegative()

◆ SCIPisDualfeasIntegral()

◆ SCIPisDualfeasFracIntegral()

◆ SCIPdualfeasFloor()

◆ SCIPdualfeasCeil()

◆ SCIPdualfeasRound()

◆ SCIPdualfeasFrac()

◆ SCIPisLbBetter()

◆ SCIPisUbBetter()

◆ SCIPisRelEQ()

◆ SCIPisRelLT()

◆ SCIPisRelLE()

◆ SCIPisRelGT()

◆ SCIPisRelGE()