GlobiPack_Brents1DMinimization_decl.hpp

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//    GlobiPack: Collection of Scalar 1D globalizaton utilities
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#ifndef GLOBIPACK_BRENTS_1D_MINIMIZATION_DECL_HPP
#define GLOBIPACK_BRENTS_1D_MINIMIZATION_DECL_HPP
 
 
#include "GlobiPack_MeritFunc1DBase.hpp"
#include "Teuchos_Describable.hpp"
#include "Teuchos_VerboseObject.hpp"
#include "Teuchos_ParameterListAcceptorDefaultBase.hpp"
 
 
namespace GlobiPack {
 
 
template<typename Scalar>
class Brents1DMinimization
  : public Teuchos::Describable,
    public Teuchos::VerboseObject<Brents1DMinimization<Scalar> >,
    public Teuchos::ParameterListAcceptorDefaultBase
{
public:
 
 
  Brents1DMinimization();
 
 
 
  void setParameterList(RCP<ParameterList> const& paramList);
  RCP<const ParameterList> getValidParameters() const;
 
 
 
  bool approxMinimize(
    const MeritFunc1DBase<Scalar> &phi,
    const PointEval1D<Scalar> &pointLower,
    const Ptr<PointEval1D<Scalar> > &pointMiddle,
    const PointEval1D<Scalar> &pointUpper,
    const Ptr<int> &numIters = Teuchos::null
    ) const;
 
 
private:
 
  // //////////////////////
  // Private data members
 
  Scalar rel_tol_;
  Scalar bracket_tol_;
  int max_iters_;
 
};
 
 
template<typename Scalar>
inline
const RCP<Brents1DMinimization<Scalar> > brents1DMinimization()
{
  return Teuchos::rcp(new Brents1DMinimization<Scalar>());
}
 
 
// Default values are exposed here for unit testing purposes
 
 
namespace Brents1DMinimizationUtils {
 
 
const std::string rel_tol_name = "Relative Tol";
const double rel_tol_default = 1.0e-5;
 
const std::string bracket_tol_name = "Bracket Tol";
const double bracket_tol_default = 1.0e-5;
 
const std::string max_iters_name = "Max Iterations";
const int max_iters_default = 10;
 
 
} // namespace Brents1DMinimizationUtils
 
 
 
} // namespace GlobiPack
 
 
#endif // GLOBIPACK_BRENTS_1D_MINIMIZATION_DECL_HPP