/*
   Private data structure for ILU/ICC/LU/Cholesky preconditioners.
*/
#if !defined(__FACTOR_H)
#define __FACTOR_H

#include <petsc-private/pcimpl.h>                /*I "petscpc.h" I*/

typedef struct {
  Mat              fact;              /* factored matrix */
  MatFactorInfo    info;
  MatOrderingType  ordering;          /* matrix reordering */
  MatSolverPackage solvertype;
  MatFactorType    factortype;
} PC_Factor;

extern PetscErrorCode PCFactorGetMatrix_Factor(PC,Mat*);

EXTERN_C_BEGIN
extern PetscErrorCode PCFactorSetZeroPivot_Factor(PC,PetscReal);
extern PetscErrorCode PCFactorSetShiftType_Factor(PC,MatFactorShiftType);
extern PetscErrorCode PCFactorSetShiftAmount_Factor(PC,PetscReal);
extern PetscErrorCode PCFactorSetDropTolerance_Factor(PC,PetscReal,PetscReal,PetscInt);
extern PetscErrorCode PCFactorSetFill_Factor(PC,PetscReal);
extern PetscErrorCode PCFactorSetMatOrderingType_Factor(PC,MatOrderingType);
extern PetscErrorCode PCFactorSetLevels_Factor(PC,PetscInt);
extern PetscErrorCode PCFactorSetAllowDiagonalFill_Factor(PC);
extern PetscErrorCode PCFactorSetPivotInBlocks_Factor(PC,PetscBool);
extern PetscErrorCode PCFactorSetMatSolverPackage_Factor(PC,const MatSolverPackage);
extern PetscErrorCode PCFactorSetUpMatSolverPackage_Factor(PC);
extern PetscErrorCode PCFactorGetMatSolverPackage_Factor(PC,const MatSolverPackage*);
extern PetscErrorCode PCFactorSetColumnPivot_Factor(PC,PetscReal);
extern PetscErrorCode PCSetFromOptions_Factor(PC);
extern PetscErrorCode PCView_Factor(PC,PetscViewer);
EXTERN_C_END

#endif