IFuncMinimum.h

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#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 ;   
}

class GAUDI_API IFuncMinimum: virtual public IAlgTool {
public:
  DeclareInterfaceID(IFuncMinimum,2,0);

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


  virtual StatusCode minimum( const GenFunc& fun   ,
                              Arg&           pars  ) const = 0 ;

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

};
#endif // GAUDIGSL_IFUNCMINIMUM_H