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Thyra_DefaultZeroLinearOp_decl.hpp
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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //    Thyra: Interfaces and Support for Abstract Numerical Algorithms
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef THYRA_DEFAULT_ZERO_LINEAR_OP_DECL_HPP
00030 #define THYRA_DEFAULT_ZERO_LINEAR_OP_DECL_HPP
00031 
00032 #include "Thyra_ZeroLinearOpBase.hpp"
00033 #include "Teuchos_ConstNonconstObjectContainer.hpp"
00034 
00035 
00036 namespace Thyra {
00037 
00038 
00055 template<class Scalar>
00056 class DefaultZeroLinearOp : virtual public ZeroLinearOpBase<Scalar>
00057 {
00058 public:
00059 
00062 
00069   DefaultZeroLinearOp();
00070 
00073   DefaultZeroLinearOp(
00074     const RCP<const VectorSpaceBase<Scalar> > &range,
00075     const RCP<const VectorSpaceBase<Scalar> > &domain
00076     );
00077 
00094   void initialize(
00095     const RCP<const VectorSpaceBase<Scalar> > &range,
00096     const RCP<const VectorSpaceBase<Scalar> > &domain
00097     );
00098 
00105   void uninitialize();
00106 
00108 
00111   
00113   RCP< const VectorSpaceBase<Scalar> > range() const;
00114   
00116   RCP< const VectorSpaceBase<Scalar> > domain() const;
00117   
00119   RCP<const LinearOpBase<Scalar> > clone() const;
00120   
00122   
00125                                                 
00129   std::string description() const;
00130 
00132 
00133 protected:
00134 
00137 
00139   bool opSupportedImpl(EOpTransp M_trans) const;
00140 
00142   void applyImpl(
00143     const EOpTransp M_trans,
00144     const MultiVectorBase<Scalar> &X,
00145     const Ptr<MultiVectorBase<Scalar> > &Y,
00146     const Scalar alpha,
00147     const Scalar beta
00148     ) const;
00149 
00151 
00152 private:
00153 
00154   RCP<const VectorSpaceBase<Scalar> > range_;
00155   RCP<const VectorSpaceBase<Scalar> > domain_;
00156 
00157   // Not defined and not to be called
00158   DefaultZeroLinearOp(const DefaultZeroLinearOp&);
00159   DefaultZeroLinearOp& operator=(const DefaultZeroLinearOp&);
00160 
00161 };
00162 
00163 
00168 template<class Scalar>
00169 RCP<const LinearOpBase<Scalar> >
00170 zero(
00171   const RCP<const VectorSpaceBase<Scalar> > &range,
00172   const RCP<const VectorSpaceBase<Scalar> > &domain
00173   );
00174 
00175 
00176 } // end namespace Thyra
00177 
00178 
00179 #endif  // THYRA_DEFAULT_ZERO_LINEAR_OP_DECL_HPP
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