added the class PFitterFcnDKS which eventually will handle the DKS/GPU binding. Currently it is without real functionality

src/classes/PFitterFcnDKS.cpp

@@ -0,0 +1,107 @@
+/***************************************************************************
+
+  PFitterFcnDKS.cpp
+
+  Author: Andreas Suter
+  e-mail: andreas.suter@psi.ch
+
+***************************************************************************/
+
+/***************************************************************************
+ *   Copyright (C) 2007-2016 by Andreas Suter                              *
+ *   andreas.suter@psi.ch                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <iostream>
+using namespace std;
+
+#include "PFitterFcnDKS.h"
+
+//--------------------------------------------------------------------------
+// Constructor
+//--------------------------------------------------------------------------
+/**
+ * <p>Constructor.
+ *
+ * \param runList run list collection
+ * \param useChi2 if true, a chisq fit will be performed, otherwise a log max-likelihood fit will be carried out.
+ */
+PFitterFcnDKS::PFitterFcnDKS(PRunListCollection *runList, Bool_t useChi2) :
+  fRunListCollection(runList),
+  fUseChi2(useChi2)
+{
+  if (fUseChi2)
+    fUp = 1.0;
+  else
+    fUp = 0.5;
+}
+
+//--------------------------------------------------------------------------
+// Destructor
+//--------------------------------------------------------------------------
+/**
+ * <p>Destructor
+ */
+PFitterFcnDKS::~PFitterFcnDKS()
+{
+
+}
+
+//--------------------------------------------------------------------------
+// operator()
+//--------------------------------------------------------------------------
+/**
+ * <p>Minuit2 interface function call routine. This is the function which should be minimized.
+ *
+ * \param par a vector with all the parameters of the function
+ */
+Double_t PFitterFcnDKS::operator()(const std::vector<Double_t>& par) const
+{
+  Double_t value = 0.0;
+
+  return value;
+}
+
+//--------------------------------------------------------------------------
+// CalcExpectedChiSquare()
+//--------------------------------------------------------------------------
+/**
+ * <p>Calculates the expected chisq, expected chisq per run, and chisq per run, if applicable.
+ *
+ * \param par
+ * \param totalExpectedChisq expected chisq for all run blocks
+ * \param expectedChisqPerRun expected chisq vector for all the run blocks
+ */
+void PFitterFcnDKS::CalcExpectedChiSquare(const std::vector<Double_t> &par, Double_t &totalExpectedChisq, std::vector<Double_t> &expectedChisqPerRun)
+{
+  // init expected chisq related variables
+  totalExpectedChisq = 0.0;
+  expectedChisqPerRun.clear();
+
+  // only do something for chisq
+  if (fUseChi2) {
+    Double_t value = 0.0;
+
+    // single histo
+    for (UInt_t i=0; i<fRunListCollection->GetNoOfSingleHisto(); i++) {
+      value = fRunListCollection->GetSingleHistoChisqExpected(par, i); // calculate the expected chisq for single histo run block 'i'
+      expectedChisqPerRun.push_back(value);
+      totalExpectedChisq += value;
+    }
+  }
+}