GlobiPack_LineSearchBase.hpp

/*
// @HEADER
// ***********************************************************************
// 
//    GlobiPack: Collection of Scalar 1D globalizaton utilities
//                 Copyright (2009) 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 GLOBIPACK_LINE_SEARCH_BASE_HPP
#define GLOBIPACK_LINE_SEARCH_BASE_HPP


#include "GlobiPack_MeritFunc1DBase.hpp"
#include "Teuchos_Describable.hpp"
#include "Teuchos_VerboseObject.hpp"
#include "Teuchos_ParameterListAcceptor.hpp"


namespace GlobiPack {


template<typename Scalar>
class LineSearchBase
  : virtual public Teuchos::Describable,
    virtual public Teuchos::VerboseObject<LineSearchBase<Scalar> >,
    virtual public Teuchos::ParameterListAcceptor
{
public:

  virtual bool requiresBaseDeriv() const = 0;

  virtual bool requiresDerivEvals() const = 0;

  virtual bool doLineSearch(
    const MeritFunc1DBase<Scalar> &phi,
    const PointEval1D<Scalar> &point_k,
    const Ptr<PointEval1D<Scalar> > &point_kp1,
    const Ptr<int> &numIters
    ) const = 0;

};


} // namespace GlobiPack


#endif // GLOBIPACK_LINE_SEARCH_BASE_HPP