#include <deal.II/lac/petsc_precondition.h>

Public Member Functions
	AdditionalData (const double pivoting=1.e-6, const double zero_pivot=1.e-12, const double damping=0.0)

Public Attributes
double	pivoting

double	zero_pivot

double	damping

Detailed Description

Standardized data struct to pipe additional flags to the preconditioner.

Definition at line 581 of file petsc_precondition.h.

Constructor & Destructor Documentation

◆ AdditionalData()

PETScWrappers::PreconditionLU::AdditionalData::AdditionalData	(	const double	pivoting = `1.e-6`,
		const double	zero_pivot = `1.e-12`,
		const double	damping = `0.0`
	)

Constructor. (Default values taken from function PCCreate_LU of the PetSC lib.)

Definition at line 725 of file petsc_precondition.cc.

Member Data Documentation

◆ pivoting

double PETScWrappers::PreconditionLU::AdditionalData::pivoting

Determines, when Pivoting is done during LU decomposition. 0.0 indicates no pivoting, and 1.0 complete pivoting. Confer PetSC manual for more details.

Definition at line 596 of file petsc_precondition.h.

◆ zero_pivot

double PETScWrappers::PreconditionLU::AdditionalData::zero_pivot

Size at which smaller pivots are declared to be zero. Confer PetSC manual for more details.

Definition at line 602 of file petsc_precondition.h.

◆ damping

double PETScWrappers::PreconditionLU::AdditionalData::damping

This quantity is added to the diagonal of the matrix during factorisation.

Definition at line 608 of file petsc_precondition.h.

The documentation for this struct was generated from the following files:

deal.II/lac/petsc_precondition.h
source/lac/petsc_precondition.cc

Public Member Functions