TSFIfpackOperator.hpp

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// 
//           TSFExtended: Trilinos Solver Framework Extended
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef TSFIFPACKOPERATOR_HPP
#define TSFIFPACKOPERATOR_HPP


#include "TSFEpetraMatrix.hpp"
#include "TSFOpWithBackwardsCompatibleApply.hpp"
#include "Ifpack_IlukGraph.h"
#include "Ifpack_CrsRiluk.h"


namespace TSFExtended
{
/**
 *
 */
class IfpackOperator : 
  public OpWithBackwardsCompatibleApply<double>
{
public:
  /** */
  IfpackOperator(const EpetraMatrix* A,
    int fillLevels,
    int overlapFill,
    double relaxationValue,
    double relativeThreshold,
    double absoluteThreshold);

  /** */
  virtual bool opSupportedImpl(Thyra::EOpTransp M_trans) const;

  /** 
   * Apply operator to a vector in the domain space and return a vector
   * in the range space.
   */
  virtual void generalApply(const Thyra::EOpTransp M_trans,
    const Thyra::VectorBase<double>    &x,
    Thyra::VectorBase<double>          *y,
    const double            alpha=1.0,
    const double            beta=0.0) const ;


  /** Return the domain of the operator */
  virtual RCP< const Thyra::VectorSpaceBase<double> > domain() const {return domain_;}

  /** Return the range of the operator */
  virtual RCP< const Thyra::VectorSpaceBase<double> > range() const {return range_;}


private:
  RCP<Ifpack_IlukGraph> precondGraph_;

  RCP<Ifpack_CrsRiluk> precond_;

  RCP<const Thyra::VectorSpaceBase<double> > domain_;

  RCP<const Thyra::VectorSpaceBase<double> > range_;
};
}

#endif /* TSFIFPACKOPERATOR_HPP */