SolSTR.c File Reference

Iterative solvers for dSTRmat matrices. More...

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

Go to the source code of this file.

Functions
INT	fasp_solver_dstr_itsolver (dSTRmat *A, dvector *b, dvector *x, precond *pc, ITS_param *itparam)
	Solve Ax=b by standard Krylov methods. More...
INT	fasp_solver_dstr_krylov (dSTRmat *A, dvector *b, dvector *x, ITS_param *itparam)
	Solve Ax=b by standard Krylov methods. More...
INT	fasp_solver_dstr_krylov_diag (dSTRmat *A, dvector *b, dvector *x, ITS_param *itparam)
	Solve Ax=b by diagonal preconditioned Krylov methods. More...
INT	fasp_solver_dstr_krylov_ilu (dSTRmat *A, dvector *b, dvector *x, ITS_param *itparam, ILU_param *iluparam)
	Solve Ax=b by structured ILU preconditioned Krylov methods. More...
INT	fasp_solver_dstr_krylov_blockgs (dSTRmat *A, dvector *b, dvector *x, ITS_param *itparam, ivector *neigh, ivector *order)
	Solve Ax=b by diagonal preconditioned Krylov methods. More...

Detailed Description

Iterative solvers for dSTRmat matrices.

Note

This file contains Level-5 (Sol) functions. It requires: AuxArray.c, AuxMemory.c, AuxMessage.c, AuxTiming.c, AuxVector.c, BlaSmallMatInv.c, BlaILUSetupSTR.c, BlaSparseSTR.c, ItrSmootherSTR.c, KryPbcgs.c, KryPcg.c, KryPgmres.c, KryPvgmres.c, and PreSTR.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 SolSTR.c.

Function Documentation

fasp_solver_dstr_itsolver()

INT fasp_solver_dstr_itsolver	(	dSTRmat *	A,
		dvector *	b,
		dvector *	x,
		precond *	pc,
		ITS_param *	itparam
	)

Solve Ax=b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dSTRmat format
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 Chunsheng Feng on 03/04/2016: add VBiCGstab solver

Definition at line 51 of file SolSTR.c.

fasp_solver_dstr_krylov()

INT fasp_solver_dstr_krylov	(	dSTRmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam
	)

Solve Ax=b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dSTRmat format
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

Iteration number if converges; ERROR otherwise.

Author

Zhiyang Zhou

Date

04/25/2010

Definition at line 132 of file SolSTR.c.

fasp_solver_dstr_krylov_blockgs()

INT fasp_solver_dstr_krylov_blockgs	(	dSTRmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam,
		ivector *	neigh,
		ivector *	order
	)

Solve Ax=b by diagonal preconditioned Krylov methods.

Parameters

A	Pointer to the coeff matrix in dSTRmat format
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
neigh	Pointer to neighbor vector
order	Pointer to solver ordering

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

10/10/2010

Definition at line 323 of file SolSTR.c.

fasp_solver_dstr_krylov_diag()

INT fasp_solver_dstr_krylov_diag	(	dSTRmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam
	)

Solve Ax=b by diagonal preconditioned Krylov methods.

Parameters

A	Pointer to the coeff matrix in dSTRmat format
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

Iteration number if converges; ERROR otherwise.

Author

Zhiyang Zhou

Date

4/23/2010

Definition at line 175 of file SolSTR.c.

fasp_solver_dstr_krylov_ilu()

INT fasp_solver_dstr_krylov_ilu	(	dSTRmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam,
		ILU_param *	iluparam
	)

Solve Ax=b by structured ILU preconditioned Krylov methods.

Parameters

A	Pointer to the coeff matrix in dSTRmat format
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
iluparam	Pointer to parameters for ILU

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

05/01/2010

Definition at line 236 of file SolSTR.c.