BaseConstraint.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * Forked from https://github.com/iLCSoft/MarlinKinfit                    *
 *                                                                        *
 * Further information about the fit engine and the user interface        *
 * provided in MarlinKinfit can be found at                               *
 * https://www.desy.de/~blist/kinfit/doc/html/                            *
 * and in the LCNotes LC-TOOL-2009-001 and LC-TOOL-2009-004 available     *
 * from http://www-flc.desy.de/lcnotes/                                   *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#ifndef __BASECONSTRAINT_H
#define __BASECONSTRAINT_H
 
#include <iostream>
 
namespace Belle2 {
  namespace OrcaKinFit {
 
    class BaseFitObject;
 
//  Class BaseConstraint:
 
    class BaseConstraint {
    public:
      BaseConstraint();
 
      BaseConstraint(const BaseConstraint& rhs               
                    );
      BaseConstraint& operator= (const BaseConstraint& rhs   
                                );
 
      virtual ~BaseConstraint();
 
      virtual double getValue() const = 0;
 
      virtual double getError() const;
 
      virtual const char* getName() const;
      void setName(const char* name_);
 
      virtual void getDerivatives(int idim,                   
                                  double der[]               
                                 ) const = 0;
 
      virtual std::ostream&  print(std::ostream& os        
                                  ) const;
 
    protected:
      char* name;
    };
 
    inline std::ostream& operator<< (std::ostream& os,         
                                     const BaseConstraint& bc  
                                    )
    {
      return bc.print(os);
    }
 
  }// end OrcaKinFit namespace
} // end Belle2 namespace
 
 
#endif // __BASECONSTRAINT_H