/usr/include/root/RooLegendre.h is in libroot-roofit-dev 5.34.00-2.
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* Project: RooFit *
* Package: RooFitModels *
* File: $Id: RooLegendre.h 37129 2010-11-30 22:38:11Z wouter $
* Authors: *
* GR, Gerhard Raven, Nikhef & VU, Gerhard.Raven@nikhef.nl
* *
* Copyright (c) 2010, Nikhef & VU. All rights reserved.
* *
* Redistribution and use in source and binary forms, *
* with or without modification, are permitted according to the terms *
* listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
*****************************************************************************/
#ifndef ROO_LEGENDRE
#define ROO_LEGENDRE
#include "RooAbsReal.h"
#include "RooRealProxy.h"
class RooLegendre : public RooAbsReal {
public:
RooLegendre() ;
// an (associated) Legendre polynomial, P_l^m(x)
// note: P_l(x) == P_l^0(x)
RooLegendre(const char *name, const char *title, RooAbsReal& ctheta, int l, int m=0);
// product of two associated Legendre polynomials, P_l1^m1(ctheta) * P_l2^m2(ctheta)
RooLegendre(const char *name, const char *title, RooAbsReal& ctheta, int l1, int m1, int l2, int m2);
RooLegendre(const RooLegendre& other, const char* name = 0);
virtual TObject* clone(const char* newname) const { return new RooLegendre(*this, newname); }
inline virtual ~RooLegendre() { }
virtual Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
virtual Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
virtual Int_t getMaxVal( const RooArgSet& vars) const;
virtual Double_t maxVal( Int_t code) const;
protected: // allow RooSpHarmonic access...
RooRealProxy _ctheta;
int _l1,_m1;
int _l2,_m2;
Double_t evaluate() const;
ClassDef(RooLegendre,1) // Legendre polynomial
};
#endif
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