00001 // $Id: NOX_Epetra_Interface_Preconditioner.H,v 1.4 2006/08/22 00:01:31 rppawlo Exp $ 00002 // $Source: /space/CVS/Trilinos/packages/nox/src-epetra/NOX_Epetra_Interface_Preconditioner.H,v $ 00003 00004 //@HEADER 00005 // ************************************************************************ 00006 // 00007 // NOX: An Object-Oriented Nonlinear Solver Package 00008 // Copyright (2002) Sandia Corporation 00009 // 00010 // LOCA: Library of Continuation Algorithms Package 00011 // Copyright (2005) Sandia Corporation 00012 // 00013 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00014 // license for use of this work by or on behalf of the U.S. Government. 00015 // 00016 // This library is free software; you can redistribute it and/or modify 00017 // it under the terms of the GNU Lesser General Public License as 00018 // published by the Free Software Foundation; either version 2.1 of the 00019 // License, or (at your option) any later version. 00020 // 00021 // This library is distributed in the hope that it will be useful, but 00022 // WITHOUT ANY WARRANTY; without even the implied warranty of 00023 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00024 // Lesser General Public License for more details. 00025 // 00026 // You should have received a copy of the GNU Lesser General Public 00027 // License along with this library; if not, write to the Free Software 00028 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00029 // USA 00030 // 00031 // Questions? Contact Roger Pawlowski (rppawlo@sandia.gov) or 00032 // Eric Phipps (etphipp@sandia.gov), Sandia National Laboratories. 00033 // ************************************************************************ 00034 // CVS Information 00035 // $Source: /space/CVS/Trilinos/packages/nox/src-epetra/NOX_Epetra_Interface_Preconditioner.H,v $ 00036 // $Author: rppawlo $ 00037 // $Date: 2006/08/22 00:01:31 $ 00038 // $Revision: 1.4 $ 00039 // ************************************************************************ 00040 //@HEADER 00041 00042 #ifndef NOX_EPETRA_INTERFACE_PRECONDITIONER_H 00043 #define NOX_EPETRA_INTERFACE_PRECONDITIONER_H 00044 00045 #include "NOX_Common.H" 00046 00047 // Forward declarations 00048 class Epetra_Vector; 00049 class Epetra_Operator; 00050 namespace Teuchos { 00051 class ParameterList; 00052 } 00053 00054 namespace NOX { 00055 namespace Epetra { 00056 namespace Interface { 00057 00064 class Preconditioner { 00065 00066 public: 00067 00069 Preconditioner() {}; 00070 00072 virtual ~Preconditioner() {}; 00073 00075 virtual bool computePreconditioner(const Epetra_Vector& x, 00076 Epetra_Operator& M, 00077 Teuchos::ParameterList* precParams = 0) = 0; 00078 00079 }; 00080 } // namespace Interface 00081 } // namespace Epetra 00082 } // namespace NOX 00083 00084 #endif