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IFuncMinimum.h

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// $Id: IFuncMinimum.h,v 1.4 2005/01/10 14:35:09 mato Exp $
// =============================================================================
#ifndef GAUDIGSL_IFUNCMINIMUM_H 
#define GAUDIGSL_IFUNCMINIMUM_H 1
// Include files
// from STL
#include <vector>
#include <string>
// from Gaudi
#include "GaudiKernel/IAlgTool.h"

// forward declarations
namespace Genfun           
{
  class   AbsFunction  ;
  class   Argument     ;
};
namespace CLHEP {
  class     HepSymMatrix ;   
}
static const InterfaceID IID_IFuncMinimum("IFuncMinimum", 1 , 0);

class IFuncMinimum :  virtual public IAlgTool

{
public:
  
  typedef Genfun::AbsFunction GenFunc   ;
  typedef Genfun::Argument Arg          ;
  typedef CLHEP::HepSymMatrix Covariance;

public:
  
  static const InterfaceID& interfaceID() { return IID_IFuncMinimum; }
  
  
  virtual StatusCode minimum( const GenFunc& fun   ,
                              Arg&           pars  ) const = 0 ;

  virtual StatusCode minimum( const GenFunc& fun   ,
                              Arg&           pars  ,
                              Covariance&    covar ) const = 0 ;
  
protected:

private:

};
#endif // GAUDIGSL_IFUNCMINIMUM_H

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