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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
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
// @HEADER
#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 {
/** \brief Initialize a preconditioner from a forward linear operator.
*/
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);
}
/** \brief Uninitialize a preconditioner and optionally extra what was used to
* create it.
*/
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();
}
/** \brief Create and initialize a preconditioner from a forward linear operator.
*/
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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