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

Inheritance diagram for PreconditionJacobi< MatrixType >:

Public Types
typedef PreconditionRelaxation< MatrixType >::AdditionalData	AdditionalData

Public Types inherited from PreconditionRelaxation< MatrixType >
typedef MatrixType::size_type	size_type

Public Member Functions
template<class VectorType >
void	vmult (VectorType &, const VectorType &) const

template<class VectorType >
void	Tvmult (VectorType &, const VectorType &) const

template<class VectorType >
void	step (VectorType &x, const VectorType &rhs) const

template<class VectorType >
void	Tstep (VectorType &x, const VectorType &rhs) const

Public Member Functions inherited from PreconditionRelaxation< MatrixType >
void	initialize (const MatrixType &A, const AdditionalData &parameters=AdditionalData())

void	clear ()

size_type	m () const

size_type	n () const

Public Member Functions inherited from Subscriptor
	Subscriptor ()

	Subscriptor (const Subscriptor &)

	Subscriptor (Subscriptor &&) noexcept

virtual	~Subscriptor ()

Subscriptor &	operator= (const Subscriptor &)

Subscriptor &	operator= (Subscriptor &&) noexcept

void	subscribe (const char *identifier=nullptr) const

void	unsubscribe (const char *identifier=nullptr) const

unsigned int	n_subscriptions () const

void	list_subscribers () const

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Additional Inherited Members
Static Public Member Functions inherited from Subscriptor
static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)

static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

Protected Attributes inherited from PreconditionRelaxation< MatrixType >
SmartPointer< const MatrixType, PreconditionRelaxation< MatrixType > >	A

double	relaxation

Detailed Description

template<typename MatrixType = SparseMatrix<double>>
class PreconditionJacobi< MatrixType >

Jacobi preconditioner using matrix built-in function. The MatrixType class used is required to have a function precondition_Jacobi(VectorType&, const VectorType&, double). This class satisfies the relaxation concept.

// Declare related objects
SparseMatrix<double> A;
Vector<double> x;
Vector<double> b;
SolverCG<> solver(...);
//...initialize and build A
// Define and initialize preconditioner:
PreconditionJacobi<SparseMatrix<double> > precondition;
precondition.initialize (A, PreconditionJacobi<SparseMatrix<double> >::AdditionalData(.6));
solver.solve (A, x, b, precondition);

Author: Guido Kanschat, 2000

Definition at line 476 of file precondition.h.