Teko  Version of the Day
 All Classes Files Functions Variables Pages
Teko_PreconditionerLinearOpDecl.hpp
1 /*
2 // @HEADER
3 //
4 // ***********************************************************************
5 //
6 // Teko: A package for block and physics based preconditioning
7 // Copyright 2010 Sandia Corporation
8 //
9 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
10 // the U.S. Government retains certain rights in this software.
11 //
12 // Redistribution and use in source and binary forms, with or without
13 // modification, are permitted provided that the following conditions are
14 // met:
15 //
16 // 1. Redistributions of source code must retain the above copyright
17 // notice, this list of conditions and the following disclaimer.
18 //
19 // 2. Redistributions in binary form must reproduce the above copyright
20 // notice, this list of conditions and the following disclaimer in the
21 // documentation and/or other materials provided with the distribution.
22 //
23 // 3. Neither the name of the Corporation nor the names of the
24 // contributors may be used to endorse or promote products derived from
25 // this software without specific prior written permission.
26 //
27 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
28 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
31 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 //
39 // Questions? Contact Eric C. Cyr (eccyr@sandia.gov)
40 //
41 // ***********************************************************************
42 //
43 // @HEADER
44 
45 */
46 
47 #ifndef __Teko_PreconditionerLinearOpDecl_hpp__
48 #define __Teko_PreconditionerLinearOpDecl_hpp__
49 
50 #include "Thyra_LinearOpBase.hpp"
51 #include "Thyra_PreconditionerBase.hpp"
52 #include "Thyra_VectorSpaceBase.hpp"
53 
54 #include "Teuchos_ConstNonconstObjectContainer.hpp"
55 
56 namespace Teko {
57 
65 template <typename ScalarT>
66 class PreconditionerLinearOp : public Thyra::LinearOpBase<ScalarT> {
67  public:
69  PreconditionerLinearOp(const Teuchos::RCP<Thyra::PreconditionerBase<ScalarT> >& prec);
70  PreconditionerLinearOp(const Teuchos::RCP<const Thyra::PreconditionerBase<ScalarT> >& prec);
71 
73  void initialize(const Teuchos::RCP<Thyra::PreconditionerBase<ScalarT> >& prec);
74 
76  void initialize(const Teuchos::RCP<const Thyra::PreconditionerBase<ScalarT> >& prec);
77 
79  void uninitialize();
80 
82  virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ScalarT> > range() const;
83 
85  virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ScalarT> > domain() const;
86 
87  virtual bool opSupportedImpl(const Thyra::EOpTransp M_trans) const;
88 
90  virtual void applyImpl(const Thyra::EOpTransp M_trans, const Thyra::MultiVectorBase<ScalarT>& x,
91  const Teuchos::Ptr<Thyra::MultiVectorBase<ScalarT> >& y,
92  const ScalarT alpha, const ScalarT beta) const;
93 
95  virtual Teuchos::RCP<Thyra::PreconditionerBase<ScalarT> > getNonconstPreconditioner();
96 
98  virtual Teuchos::RCP<const Thyra::PreconditionerBase<ScalarT> > getPreconditioner() const;
99 
101  Teko::LinearOp getOperator() const { return getOperator_cnoc().getConstObj(); }
102 
103  // Inherited from Teuchos::Describable
104  void describe(Teuchos::FancyOStream& out_arg, const Teuchos::EVerbosityLevel verbLevel) const;
105 
106  protected:
108  Teuchos::ConstNonconstObjectContainer<Thyra::LinearOpBase<ScalarT> > getOperator_cnoc() const;
109 
111  Teuchos::ConstNonconstObjectContainer<Thyra::LinearOpBase<ScalarT> > getOperator_cnoc();
112 
113  Teuchos::ConstNonconstObjectContainer<Thyra::PreconditionerBase<ScalarT> > preconditioner_;
114 };
115 
128 inline Teko::LinearOp extractOperatorFromPrecOp(const Teko::LinearOp& lo);
129 
130 } // end namespace Teko
131 
132 #endif
void initialize(const Teuchos::RCP< Thyra::PreconditionerBase< ScalarT > > &prec)
build a linear operator using this preconditioner, this initialization permits changes ...
virtual Teuchos::RCP< Thyra::PreconditionerBase< ScalarT > > getNonconstPreconditioner()
Get a nonconstant PreconditionerBase object.
void uninitialize()
Disassociate this object with the currently owned preconditioner.
Teko::LinearOp getOperator() const
Get teko linear operator.
virtual void applyImpl(const Thyra::EOpTransp M_trans, const Thyra::MultiVectorBase< ScalarT > &x, const Teuchos::Ptr< Thyra::MultiVectorBase< ScalarT > > &y, const ScalarT alpha, const ScalarT beta) const
Apply operation.
virtual Teuchos::RCP< const Thyra::PreconditionerBase< ScalarT > > getPreconditioner() const
Get a constant PreconditionerBase object.
Teuchos::ConstNonconstObjectContainer< Thyra::LinearOpBase< ScalarT > > getOperator_cnoc() const
get operator associated with the preconditioner
Class that wraps a PreconditionerBase object it makes it behave like a linear operator.
virtual Teuchos::RCP< const Thyra::VectorSpaceBase< ScalarT > > range() const
Range space of this operator.
virtual Teuchos::RCP< const Thyra::VectorSpaceBase< ScalarT > > domain() const
Domain space of this operator.