sparsesmoothers.hpp

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// Copyright (c) 2010, Lawrence Livermore National Security, LLC. Produced at
// the Lawrence Livermore National Laboratory. LLNL-CODE-443211. All Rights
// reserved. See file COPYRIGHT for details.
//
// This file is part of the MFEM library. For more information and source code
// availability see http://mfem.googlecode.com.
//
// MFEM is free software; you can redistribute it and/or modify it under the
// terms of the GNU Lesser General Public License (as published by the Free
// Software Foundation) version 2.1 dated February 1999.

#ifndef MFEM_SPARSEMATSMOOTHERS
#define MFEM_SPARSEMATSMOOTHERS

class GSSmoother : public MatrixInverse
{
public:

   GSSmoother(const SparseMatrix &a);

   virtual void Mult(const Vector &x, Vector &y) const;

   virtual ~GSSmoother();
};

class DSmoother : public MatrixInverse
{
private:
   double scale;

public:

   DSmoother(const SparseMatrix &a, double scale = 1.);

   virtual void Mult(const Vector &x, Vector &y) const;

   virtual ~DSmoother();
};

#endif