/usr/include/trilinos/Thyra_DefaultZeroLinearOp_def.hpp is in libtrilinos-thyra-dev 12.4.2-2.
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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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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
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// @HEADER
#ifndef THYRA_DEFAULT_ZERO_LINEAR_OP_DEF_HPP
#define THYRA_DEFAULT_ZERO_LINEAR_OP_DEF_HPP
#include "Thyra_DefaultZeroLinearOp_decl.hpp"
#include "Thyra_MultiVectorStdOps.hpp"
#include "Thyra_VectorStdOps.hpp"
#include "Thyra_AssertOp.hpp"
namespace Thyra {
// Constructors/initializers/accessors
template<class Scalar>
DefaultZeroLinearOp<Scalar>::DefaultZeroLinearOp()
{}
template<class Scalar>
DefaultZeroLinearOp<Scalar>::DefaultZeroLinearOp(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in
)
{
initialize(range_in,domain_in);
}
template<class Scalar>
void DefaultZeroLinearOp<Scalar>::initialize(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in
)
{
range_ = range_in.assert_not_null();
domain_ = domain_in.assert_not_null();
}
template<class Scalar>
void DefaultZeroLinearOp<Scalar>::uninitialize()
{
range_ = Teuchos::null;
domain_ = Teuchos::null;
}
// Overridden from LinearOpBase
template<class Scalar>
RCP< const VectorSpaceBase<Scalar> >
DefaultZeroLinearOp<Scalar>::range() const
{
return range_;
}
template<class Scalar>
RCP< const VectorSpaceBase<Scalar> >
DefaultZeroLinearOp<Scalar>::domain() const
{
return domain_;
}
template<class Scalar>
RCP<const LinearOpBase<Scalar> >
DefaultZeroLinearOp<Scalar>::clone() const
{
typedef DefaultZeroLinearOp<Scalar> this_t;
if(range_.get())
return Teuchos::rcp(new this_t(range_,domain_));
return Teuchos::rcp(new this_t());
}
// Overridden from Teuchos::Describable
template<class Scalar>
std::string DefaultZeroLinearOp<Scalar>::description() const
{
typedef Teuchos::ScalarTraits<Scalar> ST;
std::ostringstream oss;
oss
<< "Thyra::DefaultZeroLinearOp<" << ST::name() << ">{"
<< "range="<<(range_.get()?range_->description():"NULL")
<< ",domain="<<(domain_.get()?domain_->description():"NULL")
<< "}";
return oss.str();
}
// protected
// Overridden from LinearOpBase
template<class Scalar>
bool DefaultZeroLinearOp<Scalar>::opSupportedImpl(EOpTransp M_trans) const
{
return true;
}
template<class Scalar>
void DefaultZeroLinearOp<Scalar>::applyImpl(
const EOpTransp M_trans,
const MultiVectorBase<Scalar> &X,
const Ptr<MultiVectorBase<Scalar> > &Y,
const Scalar alpha,
const Scalar beta
) const
{
#ifdef TEUCHOS_DEBUG
THYRA_ASSERT_LINEAR_OP_MULTIVEC_APPLY_SPACES(
"DefaultZeroLinearOp<Scalar>::apply(...)", *this, M_trans, X, &*Y
);
#endif // TEUCHOS_DEBUG
scale(beta, Y);
}
template<class Scalar>
bool DefaultZeroLinearOp<Scalar>::
rowStatIsSupportedImpl(const RowStatLinearOpBaseUtils::ERowStat rowStat) const
{
if( rowStat==RowStatLinearOpBaseUtils::ROW_STAT_ROW_SUM
|| rowStat==RowStatLinearOpBaseUtils::ROW_STAT_COL_SUM)
return true;
// else( rowStat==RowStatLinearOpBaseUtils::ROW_STAT_INV_ROW_SUM
// || rowStat==RowStatLinearOpBaseUtils::ROW_STAT_INV_COL_SUM)
// inverse of a zero diagonal is bad news, we won't allow it, return false
return false;
}
template<class Scalar>
void DefaultZeroLinearOp<Scalar>::
getRowStatImpl(
const RowStatLinearOpBaseUtils::ERowStat rowStat,
const Teuchos::Ptr<VectorBase< Scalar> > &rowStatVec) const
{
Thyra::put_scalar(Teuchos::ScalarTraits<Scalar>::zero(),rowStatVec);
}
} // end namespace Thyra
template<class Scalar>
Teuchos::RCP<const Thyra::LinearOpBase<Scalar> >
Thyra::zero(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in
)
{
return Teuchos::rcp(new DefaultZeroLinearOp<Scalar>(range_in, domain_in));
}
template<class Scalar>
Teuchos::RCP<Thyra::LinearOpBase<Scalar> >
Thyra::nonconstZero(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in
)
{
return Teuchos::rcp(new DefaultZeroLinearOp<Scalar>(range_in, domain_in));
}
//
// Explicit instantaition
//
#define THYRA_DEFAULT_ZERO_LINEAR_OP_INSTANT(SCALAR) \
\
template class DefaultZeroLinearOp<SCALAR >; \
\
template RCP<const Thyra::LinearOpBase<SCALAR > > \
zero( \
const RCP<const VectorSpaceBase<SCALAR > > &range, \
const RCP<const VectorSpaceBase<SCALAR > > &domain \
); \
\
template RCP<Thyra::LinearOpBase<SCALAR > > \
nonconstZero( \
const RCP<const VectorSpaceBase<SCALAR > > &range, \
const RCP<const VectorSpaceBase<SCALAR > > &domain \
); \
#endif // THYRA_DEFAULT_ZERO_LINEAR_OP_DEF_HPP
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