ILU1_Precond Class Reference

First level fill-in incomplete LU preconditioner class. More...

#include <ilu1_precond.hpp>

Inheritance diagram for ILU1_Precond:

Public Member Functions
	ILU1_Precond ()
	Constructor for an ILU1 preconditioner. More...
	~ILU1_Precond ()
	Destructor. More...
ILU1_Precond *	copy (void) const
	Get a new copy of preconditioner. More...
void	prepare (const CRowMatrix &A)
	Prepare preconditioner for matrices with non-zero pattern equal to A. More...
void	construct (const CRowMatrix &A)
	Construct preconditioner for matrix A. More...
void	clear (void)
	Clear preconditioner. More...
bool	is_prepared (void) const
	Return false if prepare is needed. More...
const CRowMatrix *	get_matrix (void) const
	Return LU matrix. More...
void	debug_print (std::ostream &os) const
	Print debugging information to os. More...
std::string	typestring (void) const
	Return string indicating type of preconditioner. More...
void	solve (Vector &x, const Vector &b) const
	Solve M* x = b and return x. More...
Public Member Functions inherited from Precond
virtual	~Precond ()
	Virtual destructor. More...

Detailed Description

First level fill-in incomplete LU preconditioner class.

Constructor & Destructor Documentation

ILU1_Precond::ILU1_Precond

(

)

Constructor for an ILU1 preconditioner.

ILU1_Precond::~ILU1_Precond

(

)

Destructor.

Member Function Documentation

void ILU1_Precond::clear ( void  )

virtual

Clear preconditioner.

Clears preconditioner. Both prepare() and construct() functions have to be called after this.

Implements Precond.

void ILU1_Precond::construct ( const CRowMatrix &  A )

virtual

Construct preconditioner for matrix A.

Assumes ascending order matrix.

Implements Precond.

ILU1_Precond* ILU1_Precond::copy ( void  ) const

inlinevirtual

Get a new copy of preconditioner.

Does not copy matrix.

Implements Precond.

void ILU1_Precond::debug_print

(

std::ostream &

os

)

const

Print debugging information to os.

const CRowMatrix * ILU1_Precond::get_matrix

(

void

)

const

Return LU matrix.

bool ILU1_Precond::is_prepared ( void  ) const

virtual

Return false if prepare is needed.

Returns true if prepare is not needed and false if it is.

Implements Precond.

void ILU1_Precond::prepare ( const CRowMatrix &  A )

virtual

Prepare preconditioner for matrices with non-zero pattern equal to A.

Assumes ascending order matrix. Makes LU matrix a copy of A with elements where level is 1.

Implements Precond.

void ILU1_Precond::solve ( Vector &  x, const Vector &  b  ) const

virtual

Solve M* x = b and return x.

Implements Precond.

std::string ILU1_Precond::typestring ( void  ) const

virtual

Return string indicating type of preconditioner.

Implements Precond.

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

• ilu1_precond.hpp
• ilu1_precond.cpp