Detailed Description

Functions
void	SCIPcolSort (SCIP_COL *col)

SCIP_Real	SCIPcolGetObj (SCIP_COL *col)

SCIP_Real	SCIPcolGetLb (SCIP_COL *col)

SCIP_Real	SCIPcolGetUb (SCIP_COL *col)

SCIP_Real	SCIPcolGetBestBound (SCIP_COL *col)

SCIP_Real	SCIPcolGetPrimsol (SCIP_COL *col)

SCIP_Real	SCIPcolGetMinPrimsol (SCIP_COL *col)

SCIP_Real	SCIPcolGetMaxPrimsol (SCIP_COL *col)

SCIP_BASESTAT	SCIPcolGetBasisStatus (SCIP_COL *col)

SCIP_VAR *	SCIPcolGetVar (SCIP_COL *col)

int	SCIPcolGetIndex (SCIP_COL *col)

SCIP_Bool	SCIPcolIsIntegral (SCIP_COL *col)

SCIP_Bool	SCIPcolIsRemovable (SCIP_COL *col)

int	SCIPcolGetLPPos (SCIP_COL *col)

int	SCIPcolGetLPDepth (SCIP_COL *col)

SCIP_Bool	SCIPcolIsInLP (SCIP_COL *col)

int	SCIPcolGetNNonz (SCIP_COL *col)

int	SCIPcolGetNLPNonz (SCIP_COL *col)

SCIP_ROW **	SCIPcolGetRows (SCIP_COL *col)

SCIP_Real *	SCIPcolGetVals (SCIP_COL *col)

SCIP_Longint	SCIPcolGetStrongbranchNode (SCIP_COL *col)

int	SCIPcolGetNStrongbranchs (SCIP_COL *col)

SCIP_BOUNDTYPE	SCIPboundtypeOpposite (SCIP_BOUNDTYPE boundtype)

Function Documentation

void SCIPcolSort ( SCIP_COL * col )

sorts column entries such that LP rows precede non-LP rows and inside both parts lower row indices precede higher ones

Parameters

col	column to be sorted

Definition at line 3241 of file lp.c.

References colSortLP(), and colSortNonLP().

Referenced by SCIP_DECL_HEUREXEC().

SCIP_Real SCIPcolGetObj ( SCIP_COL * col )

gets objective value of column

Parameters

col LP column

Definition at line 18596 of file lp.c.

References NULL, and SCIP_Col::obj.

Referenced by computeCut(), createSubscip(), SCIPvarGetObjLP(), and transformColumn().

SCIP_Real SCIPcolGetLb ( SCIP_COL * col )

gets lower bound of column

Parameters

col LP column

Definition at line 18606 of file lp.c.

References SCIP_Col::lb, and NULL.

Referenced by computeCut(), createSubscip(), findClosestLb(), generateDisjCutSOS1(), propagateRedcostVar(), provedBound(), SCIP_DECL_SEPAEXECLP(), and SCIPvarGetLbLP().

SCIP_Real SCIPcolGetUb ( SCIP_COL * col )

gets upper bound of column

Parameters

col LP column

Definition at line 18616 of file lp.c.

References NULL, and SCIP_Col::ub.

Referenced by computeCut(), createSubscip(), findClosestUb(), generateDisjCutSOS1(), propagateRedcostVar(), provedBound(), SCIP_DECL_SEPAEXECLP(), and SCIPvarGetUbLP().

SCIP_Real SCIPcolGetBestBound ( SCIP_COL * col )

gets best bound of column with respect to the objective function

Parameters

col LP column

Definition at line 18626 of file lp.c.

References SCIP_Col::lb, NULL, SCIP_Col::obj, and SCIP_Col::ub.

Referenced by lpCleanupCols(), lpRemoveObsoleteCols(), and SCIProwRecalcPseudoActivity().

SCIP_Real SCIPcolGetPrimsol ( SCIP_COL * col )

gets the primal LP solution of a column

Parameters

col LP column

Definition at line 18639 of file lp.c.

References SCIP_Col::lppos, NULL, and SCIP_Col::primsol.

Referenced by branchcandCalcLPCands(), createSubscip(), findClosestLb(), findClosestUb(), nodepairqueueCreate(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), SCIPprobUpdateBestRootSol(), SCIPvarGetImplRedcost(), SCIPvarGetLPSol(), SCIPvarGetLPSol_rec(), SCIPvarGetRedcost(), and ZerohalfAuxGraphFree().

SCIP_Real SCIPcolGetMinPrimsol ( SCIP_COL * col )

gets the minimal LP solution value, this column ever assumed

Parameters

col LP column

Definition at line 18652 of file lp.c.

References SCIP_Col::minprimsol, and NULL.

Referenced by propagateRedcostVar().

SCIP_Real SCIPcolGetMaxPrimsol ( SCIP_COL * col )

gets the maximal LP solution value, this column ever assumed

Parameters

col LP column

Definition at line 18662 of file lp.c.

References SCIP_Col::maxprimsol, and NULL.

Referenced by propagateRedcostVar().

SCIP_BASESTAT SCIPcolGetBasisStatus ( SCIP_COL * col )

gets the basis status of a column in the LP solution; only valid for LPs with status SCIP_LPSOLSTAT_OPTIMAL and with SCIPisLPSolBasic(scip) == TRUE; returns SCIP_BASESTAT_ZERO for columns not in the current SCIP_LP

Parameters

col LP column

Definition at line 18674 of file lp.c.

References SCIP_Col::basisstatus, SCIP_Col::lppos, NULL, and SCIP_BASESTAT_ZERO.

Referenced by filterExistingLP(), generateDisjCutSOS1(), getSimplexCoefficients(), propagateRedcostBinvar(), propagateRedcostVar(), propagateRootRedcostBinvar(), SCIP_DECL_SEPAEXECLP(), SCIPprobUpdateBestRootSol(), SCIPvarGetImplRedcost(), SCIPvarGetRedcost(), and transformMIRRow().

SCIP_VAR* SCIPcolGetVar ( SCIP_COL * col )

gets variable this column represents

Parameters

col LP column

Definition at line 18685 of file lp.c.

References NULL, and SCIP_Col::var.

Referenced by addAltLPRow(), aggregation(), colIsDiscrete(), computeCut(), constructSNFRelaxation(), copyCuts(), createCGCutDirect(), createRows(), createSubproblem(), createSubscip(), extractCapacityRows(), extractFlowRows(), findClosestLb(), findClosestUb(), findUncapacitatedArcs(), generateAverageNBRay(), generateClusterCuts(), generateCut(), generateCutUnboundedLP(), generateDisjCutSOS1(), initMatrix(), isConvexLocal(), mcfnetworkExtract(), mcfnetworkFill(), nodepairqueueCreate(), nodepartitionIsConnected(), rowCalculateGauss(), rowFindSlackVar(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), SCIP_DECL_SORTPTRCOMP(), SCIPaddCut(), SCIPcomputeLPRelIntPoint(), SCIPconflictAnalyzeStrongbranch(), SCIPnlrowCreateFromRow(), SCIPsolLinkLPSol(), selectRounding(), selectShifting(), sepastoreApplyBdchg(), sepastoreIsBdchgApplicable(), transformColumn(), transformVariable(), undoBdchgsDualfarkas(), undoBdchgsDualsol(), and ZerohalfAuxGraphFree().

int SCIPcolGetIndex ( SCIP_COL * col )

gets unique index of col

Parameters

col LP col

Definition at line 18695 of file lp.c.

References SCIP_Col::index, and NULL.

SCIP_Bool SCIPcolIsIntegral ( SCIP_COL * col )

returns whether the associated variable is of integral type (binary, integer, implicit integer)

Parameters

col LP column

Definition at line 18705 of file lp.c.

References SCIP_Col::integral, NULL, SCIPvarIsIntegral(), and SCIP_Col::var.

Referenced by colIsDiscrete(), createSubscip(), generateClusterCuts(), generateDisjCutSOS1(), rowAddCoef(), rowChgCoefPos(), rowMerge(), rowScale(), SCIPcolGetStrongbranch(), SCIPcolGetStrongbranches(), SCIPcolInvalidateStrongbranchData(), SCIPcolSetStrongbranchData(), and SCIProwCalcIntegralScalar().

SCIP_Bool SCIPcolIsRemovable ( SCIP_COL * col )

returns TRUE iff column is removable from the LP (due to aging or cleanup)

Parameters

col LP column

Definition at line 18716 of file lp.c.

References NULL, and SCIP_Col::removable.

int SCIPcolGetLPPos ( SCIP_COL * col )

gets position of column in current LP, or -1 if it is not in LP

Parameters

col LP column

Definition at line 18726 of file lp.c.

References SCIP_Col::lpdepth, SCIP_Col::lppos, and NULL.

Referenced by addBdchg(), addFlowrowToCommodity(), aggregation(), cleanupNetwork(), collectIncidentFlowCols(), computeCut(), createCGCutCMIR(), deleteCommodity(), extractCapacities(), extractCapacityRows(), extractNodes(), findClosestLb(), findClosestUb(), findUncapacitatedArcs(), generateAverageRay(), generateClusterCuts(), generateDisjCutSOS1(), getFlowrowFit(), getIncidentNodes(), getNodeSimilarityScore(), identifySourcesTargets(), initMatrix(), mcfnetworkExtract(), mcfnetworkFill(), nodepairqueueCreate(), rowFindSlackVar(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), undoBdchgsDualfarkas(), and undoBdchgsDualsol().

int SCIPcolGetLPDepth ( SCIP_COL * col )

gets depth in the tree where the column entered the LP, or -1 if it is not in LP

Parameters

col LP column

Definition at line 18737 of file lp.c.

References SCIP_Col::lpdepth, SCIP_Col::lppos, and NULL.

SCIP_Bool SCIPcolIsInLP ( SCIP_COL * col )

returns TRUE iff column is member of current LP

Parameters

col LP column

Definition at line 18748 of file lp.c.

References SCIP_Col::lpdepth, SCIP_Col::lppos, and NULL.

Referenced by findClosestLb(), findClosestUb(), SCIPgetVarsStrongbranchesFrac(), SCIPgetVarsStrongbranchesInt(), SCIPgetVarStrongbranchFrac(), SCIPgetVarStrongbranchInt(), SCIPgetVarStrongbranchWithPropagation(), SCIPpricestoreAddProbVars(), SCIPvarIsInLP(), and transformVariable().

int SCIPcolGetNNonz ( SCIP_COL * col )

get number of nonzero entries in column vector

Parameters

col LP column

Definition at line 18759 of file lp.c.

References SCIP_Col::len, and NULL.

Referenced by calcBranchScore(), checkConstraintMatching(), determineBound(), SCIPpricestoreAddProbVars(), SCIPsolAdjustImplicitSolVals(), shiftValues(), varColCompare(), and varProcessBoundChanges().

int SCIPcolGetNLPNonz ( SCIP_COL * col )

get number of nonzero entries in column vector, that correspond to rows currently in the SCIP_LP;

Warning: This method is only applicable on columns, that are completely linked to their rows (e.g. a column that is in the current LP and the LP was solved, or a column that was in a solved LP and didn't change afterwards

Parameters

col LP column

Definition at line 18773 of file lp.c.

References SCIP_Col::nlprows, NULL, and SCIP_Col::nunlinked.

Referenced by addFracCounter(), aggregation(), calcShiftVal(), calculateBounds(), createSubscip(), extractNodes(), getIncidentNodes(), getNActiveConsScore(), getNextFlowrow(), initMatrix(), relaxVar(), rowFindSlackVar(), SCIP_DECL_HEUREXEC(), transformColumn(), updateActivities(), updateRowActivities(), and updateSlacks().

SCIP_ROW** SCIPcolGetRows ( SCIP_COL * col )

gets array with rows of nonzero entries

Parameters

col LP column

Definition at line 18784 of file lp.c.

References NULL, and SCIP_Col::rows.

Referenced by addFracCounter(), aggregation(), calcBranchScore(), calcShiftVal(), calculateBounds(), checkConstraintMatching(), createSubscip(), determineBound(), extractNodes(), getIncidentNodes(), getNActiveConsScore(), getNextFlowrow(), initMatrix(), relaxVar(), SCIP_DECL_HEUREXEC(), SCIPsolAdjustImplicitSolVals(), shiftValues(), transformColumn(), updateActivities(), updateRowActivities(), updateSlacks(), varColCompare(), and varProcessBoundChanges().

SCIP_Real* SCIPcolGetVals ( SCIP_COL * col )

gets array with coefficients of nonzero entries

Parameters

col LP column

Definition at line 18794 of file lp.c.

References NULL, and SCIP_Col::vals.

Referenced by aggregation(), calcBranchScore(), calcShiftVal(), calculateBounds(), createSubscip(), determineBound(), getIncidentNodes(), getNActiveConsScore(), initMatrix(), relaxVar(), SCIPsolAdjustImplicitSolVals(), shiftValues(), transformColumn(), updateActivities(), updateRowActivities(), updateSlacks(), and varProcessBoundChanges().

SCIP_Longint SCIPcolGetStrongbranchNode ( SCIP_COL * col )

gets node number of the last node in current branch and bound run, where strong branching was used on the given column, or -1 if strong branching was never applied to the column in current run

Parameters

col LP column

Definition at line 18806 of file lp.c.

References NULL, and SCIP_Col::sbnode.

Referenced by SCIPgetVarStrongbranchNode().

int SCIPcolGetNStrongbranchs ( SCIP_COL * col )

gets number of times, strong branching was applied in current run on the given column

Parameters

col LP column

Definition at line 18816 of file lp.c.

References SCIP_Col::nsbcalls, and NULL.

Referenced by SCIPgetVarNStrongbranchs().