/usr/include/CLHEP/GenericFunctions/LegendreFit.hh is in libclhep-dev 2.1.4.1+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// $Id: LegendreFit.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
//---------------------LegendreFit------------------------------------------//
// //
// Class LegendreFit. This is a fitting function consisting of a super //
// position of N legendre polynomials. Cascading fractions and phases are //
// the input parameters. Function is normalized to one (on [-1,1]) //
// //
//--------------------------------------------------------------------------//
#ifndef LegendreFit_h
#define LegendreFit_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
#include "CLHEP/GenericFunctions/Parameter.hh"
#include "CLHEP/GenericFunctions/LegendreCoefficientSet.hh"
#include "CLHEP/GenericFunctions/ClebschGordanCoefficientSet.hh"
namespace Genfun {
/**
* @author
* @ingroup genfun
*/
class LegendreFit : public AbsFunction {
FUNCTION_OBJECT_DEF(LegendreFit)
public:
// Constructor
LegendreFit(unsigned int N);
// Copy constructor
LegendreFit(const LegendreFit &right);
// Destructor
virtual ~LegendreFit();
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
unsigned int order() const;
Parameter *getFraction(unsigned int i);
const Parameter *getFraction(unsigned int i) const;
Parameter *getPhase(unsigned int i);
const Parameter *getPhase(unsigned int i) const;
// Gets the coefficients the coefficients of the function which is
// Squared to obtain a probability distribution (amplitude)
const LegendreCoefficientSet & coefficientsA() const;
// Gets the coefficients the coefficients of the function which is
// Squared to obtain a probability distribution:
const LegendreCoefficientSet & coefficientsASq() const;
// Recompute coefficients from the parameters:
void recomputeCoefficients() const;
private:
// It is illegal to assign an adjustable constant
const LegendreFit & operator=(const LegendreFit &right);
//
const unsigned int N;
std::vector <Genfun::Parameter *> fraction;
std::vector <Genfun::Parameter *> phase;
mutable LegendreCoefficientSet coefA;
mutable LegendreCoefficientSet coefASq;
mutable ClebschGordanCoefficientSet ClebschGordan;
};
} // namespace Genfun
#include "CLHEP/GenericFunctions/LegendreFit.icc"
#endif
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