PreSTR.c File Reference

Preconditioners for dSTRmat matrices. More...

#include <math.h>
#include "fasp.h"
#include "fasp_functs.h"

Go to the source code of this file.

Functions
void	fasp_precond_dstr_diag (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dstr_ilu0 (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(0) decomposition. More...
void	fasp_precond_dstr_ilu1 (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(1) decomposition. More...
void	fasp_precond_dstr_ilu0_forward (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(0) decomposition: Lz = r. More...
void	fasp_precond_dstr_ilu0_backward (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(0) decomposition: Uz = r. More...
void	fasp_precond_dstr_ilu1_forward (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(1) decomposition: Lz = r. More...
void	fasp_precond_dstr_ilu1_backward (REAL *r, REAL *z, void *data)
	Preconditioning using STR_ILU(1) decomposition: Uz = r. More...
void	fasp_precond_dstr_blockgs (REAL *r, REAL *z, void *data)
	CPR-type preconditioner (STR format) More...

Detailed Description

Preconditioners for dSTRmat matrices.

Note

This file contains Level-4 (Pre) functions. It requires: AuxArray.c, AuxMemory.c, AuxVector.c, BlaSmallMat.c, BlaArray.c, and ItrSmootherSTR.c

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Copyright (C) 2009–Present by the FASP team. All rights reserved.

Released under the terms of the GNU Lesser General Public License 3.0 or later.

Definition in file PreSTR.c.

Function Documentation

fasp_precond_dstr_blockgs()

void fasp_precond_dstr_blockgs	(	REAL *	r,
		REAL *	z,
		void *	data
	)

CPR-type preconditioner (STR format)

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

10/17/2010

Definition at line 1715 of file PreSTR.c.

fasp_precond_dstr_diag()

void fasp_precond_dstr_diag	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

04/06/2010

Definition at line 44 of file PreSTR.c.

fasp_precond_dstr_ilu0()

void fasp_precond_dstr_ilu0	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(0) decomposition.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

04/21/2010

Definition at line 71 of file PreSTR.c.

fasp_precond_dstr_ilu0_backward()

void fasp_precond_dstr_ilu0_backward	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(0) decomposition: Uz = r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

06/07/2010

Definition at line 987 of file PreSTR.c.

fasp_precond_dstr_ilu0_forward()

void fasp_precond_dstr_ilu0_forward	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(0) decomposition: Lz = r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

06/07/2010

Definition at line 824 of file PreSTR.c.

fasp_precond_dstr_ilu1()

void fasp_precond_dstr_ilu1	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(1) decomposition.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

04/21/2010

Definition at line 349 of file PreSTR.c.

fasp_precond_dstr_ilu1_backward()

void fasp_precond_dstr_ilu1_backward	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(1) decomposition: Uz = r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

04/21/2010

Definition at line 1434 of file PreSTR.c.

fasp_precond_dstr_ilu1_forward()

void fasp_precond_dstr_ilu1_forward	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Preconditioning using STR_ILU(1) decomposition: Lz = r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang

Date

04/21/2010

Definition at line 1168 of file PreSTR.c.