Thyra_SerialLinearOpBase.hpp

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

#include "Thyra_SerialLinearOpBaseDecl.hpp"
#include "Thyra_EuclideanLinearOpBase.hpp"
#include "Thyra_DefaultSerialVectorSpace.hpp"
#include "Thyra_DetachedVectorView.hpp"
#include "Thyra_DetachedMultiVectorView.hpp"

namespace Thyra {

// Overridden from EuclideanLinearOpBase

template<class Scalar>
Teuchos::RefCountPtr< const ScalarProdVectorSpaceBase<Scalar> >
SerialLinearOpBase<Scalar>::rangeScalarProdVecSpc() const
{
  return range_;
}

template<class Scalar>
Teuchos::RefCountPtr< const ScalarProdVectorSpaceBase<Scalar> >
SerialLinearOpBase<Scalar>::domainScalarProdVecSpc() const
{
  return domain_;
}

template<class Scalar>
void SerialLinearOpBase<Scalar>::euclideanApply(
  const ETransp                     M_trans
  ,const MultiVectorBase<Scalar>    &X
  ,MultiVectorBase<Scalar>          *Y
  ,const Scalar                     alpha
  ,const Scalar                     beta
  ) const
{
#ifdef TEUCHOS_DEBUG
  THYRA_ASSERT_LINEAR_OP_MULTIVEC_APPLY_SPACES("SerialLinearOpBase<Scalar>::apply()",*this,M_trans,X,Y);
#endif
  const ConstDetachedMultiVectorView<Scalar>         X_ev(X);
  const DetachedMultiVectorView<Scalar>  Y_ev(*Y);
  this->euclideanApply(M_trans,X_ev.smv(),&Y_ev.smv(),alpha,beta);
}

// protected

// Constructors/initializers/accessors

template<class Scalar>
SerialLinearOpBase<Scalar>::SerialLinearOpBase()
  :forceUnitStride_(true)
{}

template<class Scalar>
void SerialLinearOpBase<Scalar>::setSpaces(
  const Teuchos::RefCountPtr<const ScalarProdVectorSpaceBase<Scalar> >     &range
  ,const Teuchos::RefCountPtr<const ScalarProdVectorSpaceBase<Scalar> >    &domain
  )
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT(range.get()==NULL);
  TEST_FOR_EXCEPT(domain.get()==NULL);
#endif
  range_  = range;
  domain_ = domain;
}

template<class Scalar>
void SerialLinearOpBase<Scalar>::setDimensions(
  const Index                                                dimRange
  ,const Index                                               dimDomain
  )
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT( dimRange <= 0 );
  TEST_FOR_EXCEPT( dimDomain <= 0 );
#endif
  range_  = Teuchos::rcp(new DefaultSerialVectorSpace<Scalar>(dimRange));
  domain_ = Teuchos::rcp(new DefaultSerialVectorSpace<Scalar>(dimDomain));
}

// Virtual functions to be overridden by subclasses

template<class Scalar>
void SerialLinearOpBase<Scalar>::euclideanApply(
  const ETransp                                     M_trans
  ,const RTOpPack::ConstSubMultiVectorView<Scalar>          &X
  ,const RTOpPack::SubMultiVectorView<Scalar>   *Y
  ,const Scalar                                     alpha
  ,const Scalar                                     beta
  ) const
{
  for(Index j = 0; j < X.numSubCols(); ++j ) {
    const RTOpPack::ConstSubVectorView<Scalar>         X_j = X.col(j);
    const RTOpPack::SubVectorView<Scalar>  Y_j = Y->col(j);
    this->euclideanApply(M_trans,X_j,&Y_j,alpha,beta);
  }
}

} // end namespace Thyra

#endif  // THYRA_SERIAL_LINEAR_OP_BASE_HPP

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