RooCFunction1Binding.cxx

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/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 *    File: $Id$
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, NIKHEF, verkerke@nikhef.nl                         *
 *                                                                           *
 * Copyright (c) 2000-2008, NIKHEF, Regents of the University of California  *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 *****************************************************************************/
 
/** \class RooCFunction1Binding
    \ingroup Roofit
 
RooCFunction1Binding is a templated implementation of class RooAbsReal that binds
generic C(++) functions to a RooAbsReal argument thus allowing generic C++
functions to be used as RooFit functions. Instances of function binding
classes are fully functional RooFit function objects with one exception:
if the bound function is _not_ a standard TMath or MathMore function the
class cannot be persisted in a RooWorkspace without registering the function
pointer first using RooCFunction1Binding<T1,T2>::register().
**/
 
#include "Riostream.h"
#include "RooCFunction1Binding.h"
 
 
template<>
RooCFunction1Map<double,double>& RooCFunction1Ref<double,double>::fmap()
 {
    // Return reference to function pointer-to-name mapping service
    if (!_fmap) {
      _fmap = new RooCFunction1Map<double,double> ;
    }
    return *_fmap ;
  }
 
template<>
RooCFunction1Map<double,int>& RooCFunction1Ref<double,int>::fmap()
 {
    // Return reference to function pointer-to-name mapping service
    if (!_fmap) {
      _fmap = new RooCFunction1Map<double,int> ;
    }
    return *_fmap ;
 }
 
namespace RooFit {
 
  RooAbsReal* bindFunction(const char* name,CFUNCD1D func,RooAbsReal& x) {
    return new RooCFunction1Binding<double,double>(name,name,func,x) ;
  }
 
  RooAbsReal* bindFunction(const char* name,CFUNCD1I func,RooAbsReal& x) {
    return new RooCFunction1Binding<double,Int_t>(name,name,func,x) ;
  }
 
  RooAbsPdf* bindPdf(const char* name,CFUNCD1D func,RooAbsReal& x) {
    return new RooCFunction1PdfBinding<double,double>(name,name,func,x) ;
  }
 
  RooAbsPdf* bindPdf(const char* name,CFUNCD1I func,RooAbsReal& x) {
    return new RooCFunction1PdfBinding<double,Int_t>(name,name,func,x) ;
  }
 
}