Thyra_PreconditionerFactoryHelpers.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_PRECONDITIONER_FACTORY_HELPERS_DECL_HPP
#define THYRA_PRECONDITIONER_FACTORY_HELPERS_DECL_HPP


#include "Thyra_PreconditionerFactoryBase.hpp"
#include "Thyra_DefaultLinearOpSource.hpp"
#include "Thyra_DefaultPreconditioner.hpp"


namespace Thyra {


template <class Scalar>
void initializePrec(
  const PreconditionerFactoryBase<Scalar>                    &precFactory
  ,const Teuchos::RCP<const LinearOpBase<Scalar> >   &fwdOp
  ,PreconditionerBase<Scalar>                                *prec
  ,const ESupportSolveUse                                    supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  precFactory.initializePrec(defaultLinearOpSource(fwdOp),prec,supportSolveUse);
}


template <class Scalar>
void uninitializePrec(
  const PreconditionerFactoryBase<Scalar>               &precFactory
  ,PreconditionerBase<Scalar>                           *prec
  ,Teuchos::RCP<const LinearOpBase<Scalar> >    *fwdOp           = NULL
  ,ESupportSolveUse                                     *supportSolveUse = NULL
  )
{
  Teuchos::RCP<const LinearOpSourceBase<Scalar> > fwdOpSrc;
  precFactory.uninitializePrec(prec,&fwdOpSrc,supportSolveUse);
  if(fwdOp) *fwdOp = fwdOpSrc->getOp();
}


template <class Scalar>
Teuchos::RCP<PreconditionerBase<Scalar> >
prec(
  const PreconditionerFactoryBase<Scalar>                    &precFactory
  ,const Teuchos::RCP<const LinearOpBase<Scalar> >   &fwdOp
  ,const ESupportSolveUse                                    supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  Teuchos::RCP<PreconditionerBase<Scalar> >
    prec = precFactory.createPrec();
  precFactory.initializePrec(defaultLinearOpSource(fwdOp),&*prec,supportSolveUse);
  return prec;
}


} // namespace Thyra


#endif // THYRA_PRECONDITIONER_FACTORY_HELPERS_DECL_HPP

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