MinimumSeedGenerator.h

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// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
 
/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/
 
#ifndef ROOT_Minuit2_MinimumSeedGenerator
#define ROOT_Minuit2_MinimumSeedGenerator
 
namespace ROOT {
 
namespace Minuit2 {
 
class MinimumSeed;
class MnFcn;
class GradientCalculator;
class MnUserParameterState;
class MnStrategy;
class AnalyticalGradientCalculator;
 
/** base class for seed generators (starting values); the seed generator
    prepares initial starting values from the input (MnUserParameterState)
    for the minimization;
 */
 
class MinimumSeedGenerator {
 
public:
   virtual ~MinimumSeedGenerator() {}
 
   virtual MinimumSeed
   operator()(const MnFcn &, const GradientCalculator &, const MnUserParameterState &, const MnStrategy &) const = 0;
 
   virtual MinimumSeed operator()(const MnFcn &, const AnalyticalGradientCalculator &, const MnUserParameterState &,
                                  const MnStrategy &) const = 0;
};
 
} // namespace Minuit2
 
} // namespace ROOT
 
#endif // ROOT_Minuit2_MinimumSeedGenerator