/usr/include/trilinos/Teko_ImplicitLinearOp.hpp is in libtrilinos-teko-dev 12.12.1-5.
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// Teko: A package for block and physics based preconditioning
// Copyright 2010 Sandia Corporation
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#ifndef __Teko_ImplicitLinearOp_hpp__
#define __Teko_ImplicitLinearOp_hpp__
#include "Teko_Utilities.hpp"
namespace Teko {
/** \brief A virtual class that simplifies the construction
* of custom operators.
*
* A virtual class that simplifies the construction
* of custom operators.
*/
class ImplicitLinearOp : public Thyra::LinearOpBase<double> {
public:
/** @brief Range space of this operator */
virtual VectorSpace range() const = 0;
/** @brief Domain space of this operator */
virtual VectorSpace domain() const = 0;
/** @brief Perform a matrix vector multiply with this implicitly
* defined blocked operator.
*
* The <code>apply</code> function takes one vector as input
* and applies a linear operator. The result
* is returned in \f$y\f$. If this operator is reprsented as \f$M\f$ then
* \f$ y = \alpha M x + \beta y \f$
*
* @param[in] x
* @param[in,out] y
* @param[in] alpha (default=1)
* @param[in] beta (default=0)
*/
virtual void implicitApply(const MultiVector & x, MultiVector & y,
const double alpha = 1.0, const double beta = 0.0) const = 0;
protected:
//! Functions required by Thyra::LinearOpBase
//@{
virtual bool opSupportedImpl(const Thyra::EOpTransp M_trans) const;
virtual void applyImpl(
const Thyra::EOpTransp M_trans,
const Thyra::MultiVectorBase<double> & x,
const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & y,
const double alpha,
const double beta
) const;
//@}
};
} // end namespace Teko
#endif
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