Thyra_LinearOpScalarProd.hpp

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00003 // 
00004 //    Thyra: Interfaces and Support for Abstract Numerical Algorithms
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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00011 // it under the terms of the GNU Lesser General Public License as
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00028 
00029 #ifndef THYRA_LINEAR_OP_SCALAR_PROD_HPP
00030 #define THYRA_LINEAR_OP_SCALAR_PROD_HPP
00031 
00032 #include "Thyra_LinearOpScalarProdDecl.hpp"
00033 #include "Thyra_ScalarProdBase.hpp"
00034 #include "Thyra_MultiVectorStdOps.hpp"
00035 #include "Thyra_EuclideanLinearOpBase.hpp"
00036 
00037 namespace Thyra {
00038 
00039 // Constructors, initializers, accessors
00040 
00041 template<class Scalar>
00042 LinearOpScalarProd<Scalar>::LinearOpScalarProd()
00043 {}
00044 
00045 template<class Scalar>
00046 LinearOpScalarProd<Scalar>::LinearOpScalarProd( const Teuchos::RefCountPtr<const LinearOpBase<Scalar> > &op )
00047 {
00048   this->initialize(op);
00049 }
00050 
00051 template<class Scalar>
00052 void LinearOpScalarProd<Scalar>::initialize( const Teuchos::RefCountPtr<const LinearOpBase<Scalar> > &op )
00053 {
00054 #ifdef TEUCHOS_DEBUG
00055   TEST_FOR_EXCEPT(op.get()==NULL);
00056 #endif
00057   op_ = op;
00058 }
00059 
00060 template<class Scalar>
00061 void LinearOpScalarProd<Scalar>::uninitialize( Teuchos::RefCountPtr<const LinearOpBase<Scalar> > *op )
00062 {
00063   if(op) *op = op_;
00064   op_ = Teuchos::null;
00065 }
00066 
00067 // Overridden from ScalarProdBase
00068 
00069 template<class Scalar>
00070 void LinearOpScalarProd<Scalar>::scalarProds( const MultiVectorBase<Scalar>& X, const MultiVectorBase<Scalar>& Y, Scalar scalar_prods[] ) const
00071 {
00072   Teuchos::RefCountPtr<MultiVectorBase<Scalar> >
00073     T = createMembers(Y.range(),Y.domain()->dim());
00074   Thyra::apply(*op_,NOTRANS,Y,&*T);
00075   dots(X,*T,scalar_prods);
00076 }
00077 
00078 template<class Scalar>
00079 void LinearOpScalarProd<Scalar>::apply(
00080   const EuclideanLinearOpBase<Scalar>   &M
00081   ,const ETransp                        M_trans
00082   ,const MultiVectorBase<Scalar>        &X
00083   ,MultiVectorBase<Scalar>              *Y
00084   ,const Scalar                         alpha
00085   ,const Scalar                         beta
00086   ) const
00087 {
00088 #ifdef TEUCHOS_DEBUG
00089   TEST_FOR_EXCEPT(Y==NULL);
00090 #endif
00091   Teuchos::RefCountPtr<MultiVectorBase<Scalar> >
00092     T = createMembers(X.range(),X.domain()->dim());
00093   Thyra::apply(*op_,NOTRANS,X,&*T);
00094   Thyra::euclideanApply(M,M_trans,*T,Y,alpha,beta);
00095 }
00096 
00097 } // end namespace Thyra
00098 
00099 #endif  // THYRA_LINEAR_OP_SCALAR_PROD_HPP

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