SolMatFree.c File Reference

Iterative solvers using MatFree spmv operations. More...

#include <time.h>
#include "fasp.h"
#include "fasp_block.h"
#include "fasp_functs.h"
#include "BlaSpmvMatFree.inl"
#include "KryUtil.inl"

Go to the source code of this file.

Functions
INT	fasp_solver_itsolver (mxv_matfree *mf, dvector *b, dvector *x, precond *pc, ITS_param *itparam)
	Solve Ax=b by preconditioned Krylov methods for CSR matrices. More...
INT	fasp_solver_krylov (mxv_matfree *mf, dvector *b, dvector *x, ITS_param *itparam)
	Solve Ax=b by standard Krylov methods – without preconditioner. More...
void	fasp_solver_matfree_init (INT matrix_format, mxv_matfree *mf, void *A)
	Initialize MatFree (or non-specified format) itsovlers. More...

Detailed Description

Iterative solvers using MatFree spmv operations.

Note

This file contains Level-5 (Sol) functions. It requires: AuxMessage.c, AuxTiming.c, BlaSpmvBLC.c, BlaSpmvBSR.c, BlaSpmvCSR.c, BlaSpmvCSRL.c, BlaSpmvSTR.c, KryPbcgs.c, KryPcg.c, KryPgcg.c, KryPgmres.c, KryPminres.c, KryPvfgmres.c, and KryPvgmres.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 SolMatFree.c.

Function Documentation

fasp_solver_itsolver()

INT fasp_solver_itsolver	(	mxv_matfree *	mf,
		dvector *	b,
		dvector *	x,
		precond *	pc,
		ITS_param *	itparam
	)

Solve Ax=b by preconditioned Krylov methods for CSR matrices.

Note

This is an abstract interface for iterative methods.

Parameters

mf	Pointer to mxv_matfree MatFree spmv operation
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
pc	Pointer to the preconditioning action
itparam	Pointer to parameters for iterative solvers

Returns

Iteration number if converges; ERROR otherwise.

Author

Chensong Zhang

Date

09/25/2009

Modified by Feiteng Huang on 09/19/2012: matrix free

Definition at line 58 of file SolMatFree.c.

fasp_solver_krylov()

INT fasp_solver_krylov	(	mxv_matfree *	mf,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam
	)

Solve Ax=b by standard Krylov methods – without preconditioner.

Parameters

mf	Pointer to mxv_matfree MatFree spmv operation
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
itparam	Pointer to parameters for iterative solvers

Returns

Number of iterations if succeed

Author

Chensong Zhang, Shiquan Zhang

Date

09/25/2009

Modified by Feiteng Huang on 09/20/2012: matrix free

Definition at line 157 of file SolMatFree.c.

fasp_solver_matfree_init()

void fasp_solver_matfree_init	(	INT	matrix_format,
		mxv_matfree *	mf,
		void *	A
	)

Initialize MatFree (or non-specified format) itsovlers.

Parameters

matrix_format	matrix format
mf	Pointer to mxv_matfree MatFree spmv operation
A	void pointer to the coefficient matrix

Author

Feiteng Huang

Date

09/18/2012

Modified by Chensong Zhang on 05/10/2013: Change interface of mat-free mv

Definition at line 201 of file SolMatFree.c.