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Thyra_TpetraEuclideanScalarProd_def.hpp
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4// Thyra: Interfaces and Support for Abstract Numerical Algorithms
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41
42#ifndef THYRA_TPETRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
43#define THYRA_TPETRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
44
45#include "Thyra_TpetraEuclideanScalarProd_decl.hpp"
46#include "Thyra_TpetraMultiVector.hpp"
47#include "Thyra_TpetraVector.hpp"
48
49
50namespace Thyra {
51
52
53template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
57 const ArrayView<Scalar>& scalarProds_out
58 ) const
59{
60 typedef Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> TMV;
61 Teuchos::RCP<const TMV> X_tpetra = this->getConstTpetraMultiVector(Teuchos::rcpFromRef(X));
62 Teuchos::RCP<const TMV> Y_tpetra = this->getConstTpetraMultiVector(Teuchos::rcpFromRef(Y));
63
64 if (nonnull(X_tpetra) && nonnull(Y_tpetra)) {
65 // Which one do we want transposed?
66 // Tpetra transposes the argument of dot.
67 // Below is the order from TpetraVectorSpace::scalarProdsImpl,
68 // so this would transpose Y. However, Thyra::dots (which calls
69 // the RTOp) transposes the first argument, so scalarProdsImpl
70 // in EuclideanScalarProd transposes X...
71 X_tpetra->dot(*Y_tpetra, scalarProds_out);
72 } else {
74 }
75}
76
77
78template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
82{
83 using Teuchos::rcp_dynamic_cast;
86
87 RCP<const TMV> tmv = rcp_dynamic_cast<const TMV>(mv);
88 if (nonnull(tmv)) {
89 return tmv->getConstTpetraMultiVector();
90 }
91
92 RCP<const TV> tv = rcp_dynamic_cast<const TV>(mv);
93 if (nonnull(tv)) {
94 return tv->getConstTpetraVector();
95 }
96
97 return Teuchos::null;
98}
99
100
101} // end namespace Thyra
102
103
104#endif // THYRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
virtual void scalarProdsImpl(const MultiVectorBase< Scalar > &X, const MultiVectorBase< Scalar > &Y, const ArrayView< Scalar > &scalarProds) const
Simply calls dots(X,Y,scalar_prods).
Interface for a collection of column vectors called a multi-vector.
Extends concrete implementation of a Euclidean scalar product for specifically Tpetra vectors/multive...
virtual void scalarProdsImpl(const MultiVectorBase< Scalar > &X, const MultiVectorBase< Scalar > &Y, const ArrayView< Scalar > &scalarProds) const
If X and Y are both Tpetra wrappers, computes the pair-wise scalar products directly with Tpetra call...
Concrete implementation of Thyra::MultiVector in terms of Tpetra::MultiVector.
Concrete Thyra::SpmdVectorBase using Tpetra::Vector.
T_To & dyn_cast(T_From &from)