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#ifndef ROL_DYADICOPERATOR_H
#define ROL_DYADICOPERATOR_H
#include "ROL_LinearOperator.hpp"
/** @ingroup func_group
\class ROL::DyadicOperator
\brief Interface to apply a dyadic operator to a vector
*/
namespace ROL {
// Implementation of a Dyadic operator x*y'
template<class Real>
class DyadicOperator : public ROL::LinearOperator<Real> {
typedef ROL::Vector<Real> V;
private:
const Teuchos::RCP<const V> x_;
const Teuchos::RCP<const V> y_;
public:
DyadicOperator( const Teuchos::RCP<const V> &x,
const Teuchos::RCP<const V> &y ) : x_(x), y_(y) {}
void apply( V &Hv, const V &v, Real &tol ) const {
Hv.set(*x_);
Hv.scale(v.dot(*y_));
}
void applyInverse( V &Hv, const V &v, Real &tol ) const {
TEUCHOS_TEST_FOR_EXCEPTION( true , std::logic_error,
">>> ERROR (ROL_DyadicOperator, applyInverse): "
"Not implemented.");
}
}; // class DyadicOperator
} // namespace ROL
#endif // ROL_NULLOPERATOR_H
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