Thyra_ScaledAdjointLinearOpBase.hpp

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// 
//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef THYRA_SCALED_ADJOINT_LINEAR_OP_BASE_HPP
#define THYRA_SCALED_ADJOINT_LINEAR_OP_BASE_HPP

#include "Thyra_ScaledAdjointLinearOpBaseDecl.hpp"
#include "Thyra_LinearOpBase.hpp"

template<class Scalar>
void Thyra::unwrap(
  const LinearOpBase<Scalar>      &Op
  ,Scalar                         *scalar
  ,ETransp                        *transp
  ,const LinearOpBase<Scalar>*    *origOp
  )
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT( scalar==NULL );
  TEST_FOR_EXCEPT( transp==NULL );
  TEST_FOR_EXCEPT( origOp==NULL );
#endif
  typedef Teuchos::ScalarTraits<Scalar>  ST;
  const ScaledAdjointLinearOpBase<Scalar>
    *saOp = dynamic_cast<const ScaledAdjointLinearOpBase<Scalar>*>(&Op);
  if(saOp) {
    *scalar = saOp->overallScalar();
    *transp = saOp->overallTransp();
    *origOp = &*saOp->getOrigOp();
  }
  else {
    *scalar = ST::one();
    *transp = NOTRANS;
    *origOp = &Op;
  }
}

template<class Scalar>
void Thyra::unwrap(
  const Teuchos::RefCountPtr<const LinearOpBase<Scalar> >     &Op
  ,Scalar                                                     *scalar
  ,ETransp                                                    *transp
  ,Teuchos::RefCountPtr<const LinearOpBase<Scalar> >          *origOp
  )
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT( scalar==NULL );
  TEST_FOR_EXCEPT( transp==NULL );
  TEST_FOR_EXCEPT( origOp==NULL );
#endif
  typedef Teuchos::ScalarTraits<Scalar>  ST;
  Teuchos::RefCountPtr<const ScaledAdjointLinearOpBase<Scalar> >
    saOp = Teuchos::rcp_dynamic_cast<const ScaledAdjointLinearOpBase<Scalar> >(Op);
  if(saOp.get()) {
    *scalar = saOp->overallScalar();
    *transp = saOp->overallTransp();
    *origOp = saOp->getOrigOp();
  }
  else {
    *scalar = ST::one();
    *transp = NOTRANS;
    *origOp = Op;
  }
}

#endif  // THYRA_SCALED_ADJOINT_LINEAR_OP_BASE_HPP

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