Teko_LU2x2InverseOp.hpp

Go to the documentation of this file.

/*
// @HEADER
// 
// ***********************************************************************
// 
//      Teko: A package for block and physics based preconditioning
//                  Copyright 2010 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 Eric C. Cyr (eccyr@sandia.gov)
// 
// ***********************************************************************
// 
// @HEADER

*/

#ifndef __Teko_LU2x2InverseOp_hpp__
#define __Teko_LU2x2InverseOp_hpp__

#include "Teko_Utilities.hpp"
#include "Teko_BlockImplicitLinearOp.hpp"

namespace Teko {

class LU2x2InverseOp : public BlockImplicitLinearOp {
public:
   LU2x2InverseOp(const BlockedLinearOp & A,
                       const LinearOp & invA00,
                       const LinearOp & invS);

   LU2x2InverseOp(const BlockedLinearOp & A,
                       const LinearOp & hatInvA00,
                       const LinearOp & tildeInvA00,
                       const LinearOp & invS);



   virtual VectorSpace range() const { return productRange_; }

   virtual VectorSpace domain() const { return productDomain_; }

   virtual void implicitApply(const BlockedMultiVector & x, BlockedMultiVector & y,
              const double alpha = 1.0, const double beta = 0.0) const;

   virtual void describe(Teuchos::FancyOStream & out_arg,
                         const Teuchos::EVerbosityLevel verbLevel) const;

protected:
   // fundamental operators to use
   const BlockedLinearOp A_;  
   const LinearOp hatInvA00_;  
   const LinearOp tildeInvA00_;  
   const LinearOp invS_;      

   // some blocks of A
   const LinearOp A10_;       
   const LinearOp A01_;       

   Teuchos::RCP<const Thyra::ProductVectorSpaceBase<double> > productRange_; 
   Teuchos::RCP<const Thyra::ProductVectorSpaceBase<double> > productDomain_; 

private:
   // hide me!
   LU2x2InverseOp();
   LU2x2InverseOp(const LU2x2InverseOp &);
};

inline LinearOp createLU2x2InverseOp(BlockedLinearOp & A,LinearOp & invA00,LinearOp & invS)
{
   return Teuchos::rcp(new LU2x2InverseOp(A,invA00,invS));
}

inline LinearOp createLU2x2InverseOp(BlockedLinearOp & A,LinearOp & invA00,LinearOp & invS,const std::string & str)
{
   Teuchos::RCP<Thyra::LinearOpBase<double> > result = Teuchos::rcp(new LU2x2InverseOp(A,invA00,invS));
   result->setObjectLabel(str);

   return result;
}

inline LinearOp createLU2x2InverseOp(BlockedLinearOp & A,LinearOp & hatInvA00,LinearOp & tildeInvA00,LinearOp & invS)
{
   return Teuchos::rcp(new LU2x2InverseOp(A,hatInvA00,tildeInvA00,invS));
}

inline LinearOp createLU2x2InverseOp(BlockedLinearOp & A,LinearOp & hatInvA00,LinearOp & tildeInvA00,LinearOp & invS,const std::string & str)
{
   Teuchos::RCP<Thyra::LinearOpBase<double> > result = Teuchos::rcp(new LU2x2InverseOp(A,hatInvA00,tildeInvA00,invS));
   result->setObjectLabel(str);

   return result;
}

} // end namespace Teko

#endif