/usr/include/trilinos/Thyra_DefaultColumnwiseMultiVector_def.hpp is in libtrilinos-thyra-dev 12.10.1-3.
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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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// @HEADER
#ifndef THYRA_DEFAULT_COLUMNWISE_MULTI_VECTOR_DEF_HPP
#define THYRA_DEFAULT_COLUMNWISE_MULTI_VECTOR_DEF_HPP
#include "Thyra_DefaultColumnwiseMultiVector_decl.hpp"
#include "Thyra_MultiVectorDefaultBase.hpp"
#include "Thyra_VectorSpaceBase.hpp"
#include "Thyra_VectorBase.hpp"
#include "Thyra_MultiVectorBase.hpp"
#include "Thyra_VectorStdOps.hpp"
#include "Thyra_VectorSpaceFactoryBase.hpp"
#include "Thyra_AssertOp.hpp"
#include "Teuchos_Assert.hpp"
#include "Teuchos_as.hpp"
namespace Thyra {
// Constructors/Initializers
template<class Scalar>
DefaultColumnwiseMultiVector<Scalar>::DefaultColumnwiseMultiVector()
{}
template<class Scalar>
DefaultColumnwiseMultiVector<Scalar>::DefaultColumnwiseMultiVector(
const RCP<VectorBase<Scalar> > &col_vec
)
{
this->initialize(col_vec);
}
template<class Scalar>
DefaultColumnwiseMultiVector<Scalar>::DefaultColumnwiseMultiVector(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in,
const ArrayView<const RCP<VectorBase<Scalar> > > &col_vecs_in
)
{
this->initialize(range_in, domain_in, col_vecs_in);
}
template<class Scalar>
void DefaultColumnwiseMultiVector<Scalar>::initialize(
const RCP<VectorBase<Scalar> > &col_vec
)
{
#ifdef TEUCHOS_DEBUG
const std::string err_msg =
"DefaultColumnwiseMultiVector<Scalar>::initialize(...): Error!";
TEUCHOS_TEST_FOR_EXCEPT_MSG( is_null(col_vec), err_msg );
TEUCHOS_TEST_FOR_EXCEPT_MSG( is_null(col_vec->space()), err_msg );
#endif
range_ = col_vec->space();
domain_ = range_->smallVecSpcFcty()->createVecSpc(1);
col_vecs_.resize(1);
col_vecs_[0] = col_vec;
}
template<class Scalar>
void DefaultColumnwiseMultiVector<Scalar>::initialize(
const RCP<const VectorSpaceBase<Scalar> > &range_in,
const RCP<const VectorSpaceBase<Scalar> > &domain_in,
const ArrayView<const RCP<VectorBase<Scalar> > > &col_vecs
)
{
#ifdef TEUCHOS_DEBUG
const std::string err_msg =
"DefaultColumnwiseMultiVector<Scalar>::initialize(...): Error!";
TEUCHOS_TEST_FOR_EXCEPT_MSG( is_null(range_in), err_msg );
TEUCHOS_TEST_FOR_EXCEPT_MSG( is_null(domain_in), err_msg );
TEUCHOS_TEST_FOR_EXCEPT_MSG( range_in->dim() == 0, err_msg );
TEUCHOS_TEST_FOR_EXCEPT_MSG( domain_in->dim() == 0, err_msg );
// ToDo: Check the compatibility of the vectors in col_vecs!
#endif
const int domainDim = domain_in->dim();
range_ = range_in;
domain_ = domain_in;
col_vecs_.clear();
col_vecs_.reserve(domainDim);
if (col_vecs.size()) {
for( Ordinal j = 0; j < domainDim; ++j )
col_vecs_.push_back(col_vecs[j]);
}
else {
for( Ordinal j = 0; j < domainDim; ++j )
col_vecs_.push_back(createMember(range_));
}
}
template<class Scalar>
void DefaultColumnwiseMultiVector<Scalar>::uninitialize()
{
col_vecs_.resize(0);
range_ = Teuchos::null;
domain_ = Teuchos::null;
}
// Overridden from OpBase
template<class Scalar>
RCP<const VectorSpaceBase<Scalar> >
DefaultColumnwiseMultiVector<Scalar>::range() const
{
return range_;
}
template<class Scalar>
RCP<const VectorSpaceBase<Scalar> >
DefaultColumnwiseMultiVector<Scalar>::domain() const
{
return domain_;
}
// Overridden protected functions from MultiVectorBase
template<class Scalar>
void DefaultColumnwiseMultiVector<Scalar>::assignImpl(Scalar alpha)
{
const Ordinal m = col_vecs_.size();
for (Ordinal col_j = 0; col_j < m; ++col_j) {
col_vecs_[col_j]->assign(alpha);
}
}
// Overridden protected functions from LinearOpBase
template<class Scalar>
bool DefaultColumnwiseMultiVector<Scalar>::opSupportedImpl(EOpTransp M_trans) const
{
typedef Teuchos::ScalarTraits<Scalar> ST;
return ( ST::isComplex ? ( M_trans==NOTRANS || M_trans==CONJTRANS ) : true );
}
template<class Scalar>
void DefaultColumnwiseMultiVector<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(
"MultiVectorBase<Scalar>::apply()", *this, M_trans, X, &*Y);
#endif
const Ordinal nc = this->domain()->dim();
const Ordinal m = X.domain()->dim();
for (Ordinal col_j = 0; col_j < m; ++col_j) {
const RCP<const VectorBase<Scalar> > x_j = X.col(col_j);
const RCP<VectorBase<Scalar> > y_j = Y->col(col_j);
// y_j *= beta
Vt_S(y_j.ptr(), beta);
// y_j += alpha*op(M)*x_j
if(M_trans == NOTRANS) {
//
// y_j += alpha*M*x_j = alpha*M.col(0)*x_j(0) + ... + alpha*M.col(nc-1)*x_j(nc-1)
//
// Extract an explicit view of x_j
RTOpPack::ConstSubVectorView<Scalar> x_sub_vec;
x_j->acquireDetachedView(Range1D(), &x_sub_vec);
// Loop through and add the multiple of each column
for (Ordinal j = 0; j < nc; ++j )
Vp_StV( y_j.ptr(), Scalar(alpha*x_sub_vec(j)), *this->col(j) );
// Release the view of x
x_j->releaseDetachedView(&x_sub_vec);
}
else {
//
// [ alpha*dot(M.col(0),x_j) ]
// y_j += alpha*M^T*x_j = [ alpha*dot(M.col(1),x_j) ]
// [ ... ]
// [ alpha*dot(M.col(nc-1),x_j) ]
//
// Extract an explicit view of y_j
RTOpPack::SubVectorView<Scalar> y_sub_vec;
y_j->acquireDetachedView(Range1D(), &y_sub_vec);
// Loop through and add to each element in y_j
for (Ordinal j = 0; j < nc; ++j )
y_sub_vec(j) += alpha*dot(*this->col(j), *x_j);
// Commit explicit view of y
y_j->commitDetachedView(&y_sub_vec);
}
}
}
// Overridden from MultiVectorBase
template<class Scalar>
RCP<VectorBase<Scalar> >
DefaultColumnwiseMultiVector<Scalar>::nonconstColImpl(Ordinal j)
{
using Teuchos::as;
const int num_cols = col_vecs_.size();
TEUCHOS_TEST_FOR_EXCEPTION(
!( 0 <= j && j < num_cols ), std::logic_error
,"Error, j = " << j << " does not fall in the range [0,"<<(num_cols-1)<< "]!"
);
return col_vecs_[j];
}
template<class Scalar>
RCP<MultiVectorBase<Scalar> >
DefaultColumnwiseMultiVector<Scalar>::nonconstContigSubViewImpl(
const Range1D& col_rng_in
)
{
const Ordinal numCols = domain_->dim();
const Range1D col_rng = Teuchos::full_range(col_rng_in,0,numCols-1);
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
!( col_rng.ubound() < numCols ), std::logic_error
,"DefaultColumnwiseMultiVector<Scalar>::subView(col_rng):"
"Error, the input range col_rng = ["<<col_rng.lbound()
<<","<<col_rng.ubound()<<"] "
"is not in the range [0,"<<(numCols-1)<<"]!"
);
#endif
return Teuchos::rcp(
new DefaultColumnwiseMultiVector<Scalar>(
range_,
domain_->smallVecSpcFcty()->createVecSpc(col_rng.size()),
col_vecs_(col_rng.lbound(),col_rng.size())
)
);
}
} // end namespace Thyra
#endif // THYRA_DEFAULT_COLUMNWISE_MULTI_VECTOR_DEF_HPP
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