Steps.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2007 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/More/MEAL/MEAL/Steps.h
 
#ifndef __Steps_H
#define __Steps_H
 
#include "MEAL/Univariate.h"
#include "MEAL/Scalar.h"
#include "MEAL/Parameters.h"
 
namespace MEAL {


 
  class Steps : public Univariate<Scalar> {
 
  public:

    Steps ();

    Steps (const Steps&);

    Steps& operator = (const Steps&);

    Steps* clone () const;

    void set_param_name_prefix (const std::string&);

    void add_step (double x);

    void set_step (unsigned istep, double x);

    void remove_step (unsigned istep);

    double get_step (unsigned istep) const;

    unsigned get_nstep () const;

    void set_abscissa (double value);

    unsigned get_step () const;
 
    // ///////////////////////////////////////////////////////////////////
    //
    // Function implementation
    //
    // ///////////////////////////////////////////////////////////////////

    std::string get_name () const;
 
  protected:

    void calculate (double& x, std::vector<double>* grad=0);
 
  private:

    Parameters parameters;

    std::vector<double> step;

    int current_step;

    std::string param_name_prefix;
 
  };
 
}
 
#endif