Ifpack_Preconditioner.h

/*@HEADER
// ***********************************************************************
//
//       Ifpack: Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2002) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/

#ifndef IFPACK_PRECONDITIONER_H
#define IFPACK_PRECONDITIONER_H

#include "Ifpack_ConfigDefs.h"
#include "Ifpack_CondestType.h"
#include "Epetra_Object.h"
#include "Epetra_Operator.h"
#include "Teuchos_ParameterList.hpp"
class Epetra_RowMatrix;


class Ifpack_Preconditioner : public Epetra_Operator {

public:

  virtual int SetParameters(Teuchos::ParameterList& List) = 0;

  virtual int Initialize() = 0;

  virtual bool IsInitialized() const = 0;

  virtual int Compute() = 0;

  virtual bool IsComputed() const = 0;

  virtual double Condest(const Ifpack_CondestType CT = Ifpack_Cheap,
                         const int MaxIters = 1550,
                         const double Tol = 1e-9,
             Epetra_RowMatrix* Matrix = 0) = 0;

  virtual double Condest() const = 0;

  virtual int ApplyInverse(const Epetra_MultiVector& X,
               Epetra_MultiVector& Y) const = 0;

  virtual const Epetra_RowMatrix& Matrix() const = 0;

  virtual int NumInitialize() const = 0;

  virtual int NumCompute() const = 0;

  virtual int NumApplyInverse() const = 0;

  virtual double InitializeTime() const = 0;

  virtual double ComputeTime() const = 0;

  virtual double ApplyInverseTime() const = 0;

  virtual double InitializeFlops() const = 0;

  virtual double ComputeFlops() const = 0;

  virtual double ApplyInverseFlops() const = 0;

  virtual ostream& Print(std::ostream& os) const = 0;

};

inline ostream& operator<<(ostream& os, const Ifpack_Preconditioner& obj)
{
  return(obj.Print(os));
}

#endif // IFPACK_PRECONDITIONER_H