Thyra_ScalarProdBase_decl.hpp

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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
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// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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#ifndef THYRA_SCALAR_PROD_BASE_DECL_HPP
#define THYRA_SCALAR_PROD_BASE_DECL_HPP

#include "Thyra_OperatorVectorTypes.hpp"
#include "Thyra_EuclideanLinearOpBaseDecl.hpp"


namespace Thyra {


template<class Scalar>
class ScalarProdBase {
public:
  
  
  virtual ~ScalarProdBase() {}

  

  bool isEuclidean() const
    { return isEuclideanImpl(); }

  Scalar scalarProd(
    const VectorBase<Scalar>& x, const VectorBase<Scalar>& y
    ) const
    { return scalarProdImpl(x, y); }

  void scalarProds(
    const MultiVectorBase<Scalar>& X, const MultiVectorBase<Scalar>& Y,
    const ArrayView<Scalar> &scalarProds_out
    ) const
    { scalarProdsImpl(X, Y, scalarProds_out); }

  void euclideanApply(
    const EuclideanLinearOpBase<Scalar> &M,
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &X,
    const Ptr<MultiVectorBase<Scalar> > &Y,
    const Scalar alpha,
    const Scalar beta
    ) const
    { euclideanApplyImpl(M, M_trans, X, Y, alpha, beta); }


protected:


  virtual bool isEuclideanImpl() const = 0;
  
  virtual Scalar scalarProdImpl(
    const VectorBase<Scalar>& x, const VectorBase<Scalar>& y ) const;

  virtual void scalarProdsImpl(
    const MultiVectorBase<Scalar>& X, const MultiVectorBase<Scalar>& Y,
    const ArrayView<Scalar> &scalarProds_out
    ) const = 0;

  virtual void euclideanApplyImpl(
    const EuclideanLinearOpBase<Scalar> &M,
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &X,
    const Ptr<MultiVectorBase<Scalar> > &Y,
    const Scalar alpha,
    const Scalar beta
    ) const = 0;


};


} // end namespace Thyra


#endif  // THYRA_SCALAR_PROD_BASE_DECL_HPP

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