Epetra_Operator.h

Go to the documentation of this file.

/*
//@HEADER
// ************************************************************************
//
//               Epetra: Linear Algebra Services Package
//                 Copyright 2011 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// 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 EPETRA_OPERATOR_H
#define EPETRA_OPERATOR_H

#include "Epetra_ConfigDefs.h"
class Epetra_MultiVector;
class Epetra_Map;
class Epetra_Comm;


class EPETRA_LIB_DLL_EXPORT Epetra_Operator {

 public:


    virtual ~Epetra_Operator() {};




    virtual int SetUseTranspose(bool UseTranspose) = 0;




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


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

    /* Returns the quantity \f$ \| A \|_\infty\f$ such that
       \f[\| A \|_\infty = \max_{1\lei\lem} \sum_{j=1}^n |a_{ij}| \f].

       \warning This method must not be called unless HasNormInf() returns true.
    */
    virtual double NormInf() const = 0;



    virtual const char * Label() const = 0;

    virtual bool UseTranspose() const = 0;

    virtual bool HasNormInf() const = 0;

    virtual const Epetra_Comm & Comm() const = 0;

    virtual const Epetra_Map & OperatorDomainMap() const = 0;

    virtual const Epetra_Map & OperatorRangeMap() const = 0;

};

#endif /* EPETRA_OPERATOR_H */