PreAMGInterp.c File Reference

Direct and standard interpolations for classical AMG. More...

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

Go to the source code of this file.

Functions
void	fasp_amg_interp (dCSRmat *A, ivector *vertices, dCSRmat *P, iCSRmat *S, AMG_param *param)
	Generate interpolation operator P. More...

Detailed Description

Direct and standard interpolations for classical AMG.

Note

This file contains Level-4 (Pre) functions. It requires: AuxArray.c, AuxMemory.c, AuxMessage.c, AuxThreads.c, and PreAMGInterpEM.c

Reference: U. Trottenberg, C. W. Oosterlee, and A. Schuller Multigrid (Appendix A: An Intro to Algebraic Multigrid) Academic Press Inc., San Diego, CA, 2001 With contributions by A. Brandt, P. Oswald and K. Stuben.

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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 PreAMGInterp.c.

Function Documentation

fasp_amg_interp()

void fasp_amg_interp	(	dCSRmat *	A,
		ivector *	vertices,
		dCSRmat *	P,
		iCSRmat *	S,
		AMG_param *	param
	)

Generate interpolation operator P.

Parameters

A	Pointer to dCSRmat coefficient matrix (index starts from 0)
vertices	Indicator vector for the C/F splitting of the variables
P	Prolongation (input: nonzero pattern, output: prolongation)
S	Strong connection matrix
param	AMG parameters

Author

Xuehai Huang, Chensong Zhang

Date

04/04/2010

Modified by Xiaozhe Hu on 05/23/2012: add S as input Modified by Chensong Zhang on 09/12/2012: clean up and debug interp_RS Modified by Chensong Zhang on 05/14/2013: reconstruct the code

Definition at line 64 of file PreAMGInterp.c.