Ifpack_OverlapFactor.cpp

00001 /*@HEADER
00002 // ***********************************************************************
00003 // 
00004 //       Ifpack: Object-Oriented Algebraic Preconditioner Package
00005 //                 Copyright (2002) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 //@HEADER
00028 */
00029 
00030 #include "Ifpack_OverlapFactor.h"
00031 #include "Epetra_Comm.h"
00032 #include "Epetra_Map.h"
00033 #include "Epetra_CrsGraph.h"
00034 #include "Epetra_CrsMatrix.h"
00035 #include "Epetra_VbrMatrix.h"
00036 #include "Epetra_RowMatrix.h"
00037 #include "Epetra_Vector.h"
00038 #include "Epetra_MultiVector.h"
00039 
00040 //==============================================================================
00041 Ifpack_OverlapFactor::Ifpack_OverlapFactor(const Ifpack_OverlapGraph * OverlapGraph) 
00042   : Factored_(false),
00043     Allocated_(false),
00044     ValuesInitialized_(false),
00045     OverlapGraph_(OverlapGraph),
00046     UserMatrix_(0)
00047 {
00048 }
00049 //==============================================================================
00050 Ifpack_OverlapFactor::Ifpack_OverlapFactor(const Epetra_RowMatrix * UserMatrix) 
00051   : Factored_(false),
00052     Allocated_(false),
00053     ValuesInitialized_(false),
00054     OverlapGraph_(0),
00055     UserMatrix_(UserMatrix)
00056 {
00057 }
00058 //==============================================================================
00059 Ifpack_OverlapFactor::Ifpack_OverlapFactor(const Ifpack_OverlapFactor & Source) 
00060   : Factored_(Source.Factored_),
00061     Allocated_(Source.Allocated_),
00062     ValuesInitialized_(Source.ValuesInitialized_),
00063     OverlapGraph_(Source.OverlapGraph_),
00064     UserMatrix_(Source.UserMatrix_)
00065 {
00066 }
00067 //==============================================================================
00068 int Ifpack_OverlapFactor::InitValues(const Epetra_RowMatrix * UserMatrix) {
00069   
00070 
00071   if (OverlapGraph_!=0) {
00072 
00073     Epetra_CrsMatrix * CrsMatrix = dynamic_cast<Epetra_CrsMatrix *>(UserMatrix);
00074     if (CrsMatrix!=0) 
00075   if (!Allocated()) EPETRA_CHK_ERR(-1); //Must be allocated
00076   if (ValuesInitialized()) EPETRA_CHK_ERR(1); // Values already init'ed, warn caller
00077   
00078   EPETRA_CHK_ERR(DerivedFactor()); // Call Derived class factorization
00079   SetValuesInitialized(false);
00080   SetFactored(true);
00081   return(0);
00082 }
00083 //==============================================================================
00084 int Ifpack_OverlapFactor::Factor() {
00085   
00086   if (!ValuesInitialized()) EPETRA_CHK_ERR(-1); // Values must be initialized
00087   if (Factored()) EPETRA_CHK_ERR(1); // Return with a warning that factor already done
00088   
00089   EPETRA_CHK_ERR(DerivedFactor()); // Call Derived class factorization
00090   SetValuesInitialized(false);
00091   SetFactored(true);
00092   return(0);
00093 }

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