SolAMG.c File Reference

AMG method as an iterative solver. More...

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

Go to the source code of this file.

Functions
INT	fasp_solver_amg (dCSRmat *A, dvector *b, dvector *x, AMG_param *param)
	Solve Ax = b by algebraic multigrid methods. More...

Detailed Description

AMG method as an iterative solver.

Note

This file contains Level-5 (Sol) functions. It requires: AuxMessage.c, AuxTiming.c, AuxVector.c, BlaSparseCheck.c, BlaSparseCSR.c, KrySPgmres.c, PreAMGSetupRS.c, PreAMGSetupSA.c, PreAMGSetupUA.c, PreDataInit.c, and PreMGSolve.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 SolAMG.c.

Function Documentation

fasp_solver_amg()

INT fasp_solver_amg	(	dCSRmat *	A,
		dvector *	b,
		dvector *	x,
		AMG_param *	param
	)

Solve Ax = b by algebraic multigrid methods.

Parameters

A	Pointer to dCSRmat: the coefficient matrix
b	Pointer to dvector: the right hand side
x	Pointer to dvector: the unknowns
param	Pointer to AMG_param: AMG parameters

Returns

Iteration number if converges; ERROR otherwise.

Author

Chensong Zhang

Date

04/06/2010

Note

Refer to "Multigrid" by U. Trottenberg, C. W. Oosterlee and A. Schuller Appendix A.7 (by A. Brandt, P. Oswald and K. Stuben) Academic Press Inc., San Diego, CA, 2001.

Modified by Chensong Zhang on 07/26/2014: Add error handling for AMG setup Modified by Chensong Zhang on 02/01/2021: Add return value

Definition at line 49 of file SolAMG.c.