GlobiPack_GoldenQuadInterpBracket_decl.hpp

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/*
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//    GlobiPack: Collection of Scalar 1D globalizaton utilities
//                 Copyright (2009) Sandia Corporation
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// 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.
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// 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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#ifndef GLOBIPACK_GOLDEN_BRACKET_QUAD_INTERP_DECL_HPP
#define GLOBIPACK_GOLDEN_BRACKET_QUAD_INTERP_DECL_HPP


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


namespace GlobiPack {


template<typename Scalar>
class GoldenQuadInterpBracket
  : public Teuchos::Describable,
    public Teuchos::VerboseObject<GoldenQuadInterpBracket<Scalar> >,
    public Teuchos::ParameterListAcceptorDefaultBase
{
public:


  GoldenQuadInterpBracket();



  void setParameterList(RCP<ParameterList> const& paramList);
  RCP<const ParameterList> getValidParameters() const;



  bool bracketMinimum(
    const MeritFunc1DBase<Scalar> &phi,
    const Ptr<PointEval1D<Scalar> > &pointLower,
    const Ptr<PointEval1D<Scalar> > &pointMiddle,
    const Ptr<PointEval1D<Scalar> > &pointUpper,
    const Ptr<int> &numIters = Teuchos::null
    ) const;


private:

  // //////////////////////
  // Private data members

};


template<typename Scalar>
inline
const RCP<GoldenQuadInterpBracket<Scalar> > goldenQuadInterpBracket()
{
  return Teuchos::rcp(new GoldenQuadInterpBracket<Scalar>());
}


// Default values are exposed here for unit testing purposes


namespace GoldenQuadInterpBracketUtils {


const std::string eta_name = "Armijo Slope Fraction";
const double eta_default = 1.0e-4;


} // namespace GoldenQuadInterpBracketUtils



} // namespace GlobiPack


#endif // GLOBIPACK_GOLDEN_BRACKET_QUAD_INTERP_DECL_HPP