/usr/include/trilinos/RTOpPack_TOpLinearCombination_decl.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
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// ***********************************************************************
//
// RTOp: Interfaces and Support Software for Vector Reduction Transformation
// Operations
// Copyright (2006) 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
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef RTOPPACK_TOP_LINEAR_COMBINATION_DECL_HPP
#define RTOPPACK_TOP_LINEAR_COMBINATION_DECL_HPP
#include "RTOpPack_RTOpTHelpers.hpp"
#include "Teuchos_Workspace.hpp"
namespace RTOpPack {
/** \brief Linear combination transformation operator: <tt>z0[i] = beta*z0[i]
* + sum( alpha[k]*v[k][i], k=0...num_vecs-1 ), i=0...n-1</tt>.
*
* This transformation operator only accepts <tt>num_targ_vec==1</tt>
* but accepts any <tt>num_vecs > 0</tt>.
*
* Warning! this class can only be used in SPMD mode and not
* client/server or master/slave. You know what needs to happen for
* this to work!
*/
template<class Scalar>
class TOpLinearCombination : public RTOpT<Scalar> {
public:
/** \brief . */
TOpLinearCombination(
const ArrayView<const Scalar> &alpha_in = Teuchos::null,
const Scalar &beta = Teuchos::ScalarTraits<Scalar>::zero()
);
/** \brief . */
void alpha( const ArrayView<const Scalar> &alpha_in );
/** \brief . */
const ArrayView<const Scalar> alpha() const;
/** \brief . */
void beta( const Scalar& beta_in );
/** \brief . */
Scalar beta() const;
/** \brief . */
int num_vecs() const;
/** @name Overridden from RTOpT */
//@{
/** \brief . */
void apply_op_impl(
const ArrayView<const ConstSubVectorView<Scalar> > &sub_vecs,
const ArrayView<const SubVectorView<Scalar> > &targ_sub_vecs,
const Ptr<ReductTarget> &reduct_obj_inout
) const;
//@}
private:
Scalar beta_;
Array<Scalar> alpha_;
};
} // namespace RTOpPack
#endif // RTOPPACK_TOP_LINEAR_COMBINATION_DECL_HPP
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