PreAMGInterpEM.c File Reference

Interpolation operators for AMG based on energy-min. 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_em (dCSRmat *A, ivector *vertices, dCSRmat *P, AMG_param *param)
	Energy-min interpolation. More...

Detailed Description

Interpolation operators for AMG based on energy-min.

Note

This file contains Level-4 (Pre) functions. It requires: AuxArray.c, AuxMemory.c, AuxThreads.c, AuxVector.c, BlaSmallMatLU.c, BlaSparseCSR.c, KryPcg.c, and PreCSR.c

Reference: J. Xu and L. Zikatanov On An Energy Minimizing Basis in Algebraic Multigrid Methods, Computing and visualization in sciences, 2003

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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 PreAMGInterpEM.c.

Function Documentation

fasp_amg_interp_em()

void fasp_amg_interp_em	(	dCSRmat *	A,
		ivector *	vertices,
		dCSRmat *	P,
		AMG_param *	param
	)

Energy-min interpolation.

Parameters

A	Pointer to dCSRmat: the coefficient matrix (index starts from 0)
vertices	Pointer to the indicator of CF splitting on fine or coarse grid
P	Pointer to the dCSRmat matrix of resulted interpolation
param	Pointer to AMG_param: AMG parameters

Author

Shuo Zhang, Xuehai Huang

Date

04/04/2010

Modified by Chunsheng Feng, Zheng Li on 10/17/2012: add OMP support Modified by Chensong Zhang on 05/14/2013: reconstruct the code

Definition at line 63 of file PreAMGInterpEM.c.