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Teko_DiagonalPreconditionerOp.hpp
1/*
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3//
4// ***********************************************************************
5//
6// Teko: A package for block and physics based preconditioning
7// Copyright 2010 Sandia Corporation
8//
9// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
10// the U.S. Government retains certain rights in this software.
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45*/
46
47#ifndef __Teko_DiagonalPreconditionerOp_hpp__
48#define __Teko_DiagonalPreconditionerOp_hpp__
49#include "Teko_Utilities.hpp"
50
51#include "Teko_ImplicitLinearOp.hpp"
52
53class EpetraExt_PointToBlockDiagPermute;
54
55namespace Teko {
56
57class DiagonalPreconditionerOp :public ImplicitLinearOp {
58public:
59
61 DiagonalPreconditionerOp(Teuchos::RCP<EpetraExt_PointToBlockDiagPermute> BDP, const VectorSpace range, const VectorSpace domain);
62
64 virtual VectorSpace range() const {return range_;}
65
67 virtual VectorSpace domain() const {return domain_;}
68
81 virtual void implicitApply(const MultiVector & x, MultiVector & y,
82 const double alpha = 1.0, const double beta = 0.0) const;
83
84 virtual void describe(Teuchos::FancyOStream &out_arg,
85 const Teuchos::EVerbosityLevel verbLevel) const;
86
87 Teuchos::RCP<EpetraExt_PointToBlockDiagPermute> get_BDP() const {return BDP_;}
88
89private:
90
91 Teuchos::RCP<EpetraExt_PointToBlockDiagPermute> BDP_;
92 const VectorSpace range_, domain_;
93};
94
95} // end namespace Teko
96
97#endif