FitUtilParallel.h

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// @(#)root/mathcore:$Id$
// Author: L. Moneta Tue Nov 28 10:52:47 2006

/**********************************************************************
 *                                                                    *
 * Copyright (c) 2006  LCG ROOT Math Team, CERN/PH-SFT                *
 *                                                                    *
 *                                                                    *
 **********************************************************************/

// Header file for class FitUtil


#ifndef ROOT_Fit_FitUtilParallel
#define ROOT_Fit_FitUtilParallel

#ifdef _WIN32  // no support for parallel fits on Win32
#ifdef ROOT_FIT_PARALLEL
#undef ROOT_FIT_PARALLEL
#endif
#endif

#ifdef ROOT_FIT_PARALLEL

#include "Math/IParamFunctionfwd.h"

#include "Fit/DataVectorfwd.h"


namespace ROOT {

   namespace Fit {


   typedef  ROOT::Math::IParamMultiFunction IModelFunction;


/**
   namespace defining free functions for Fitting parallel mode

   Status: functions are not not completed and are still preliminary

   @ingroup FitMain
*/
namespace FitUtilParallel {



   /**
       evaluate the Chi2 given a model function and the data at the point x.
       return also nPoints as the effective number of used points in the Chi2 evaluation
       Use a parallel evaluation spawning multiple threads
   */
   double EvaluateChi2(IModelFunction & func, const BinData & data, const double * x, unsigned int & nPoints);


   double EvaluateLogL(IModelFunction & func, const UnBinData & data, const double * p, unsigned int &nPoints);


} // end namespace FitUtil

   } // end namespace Fit

} // end namespace ROOT


#endif /* ROOT_FIT_PARALLEL */
#endif /* ROOT_Fit_FitUtil */