/usr/include/CLHEP/GenericFunctions/PuncturedSmearedExp.hh is in libclhep-dev 2.1.4.1-1.2.
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: PuncturedSmearedExp.hh,v 1.3 2010/06/16 18:22:01 garren Exp $
// ------------------------------------------------------------------------------//
// This function-object makes an exponential with acceptance holes ("punctures") //
// smeared by a resolution function. //
// //
// //
// Joe Boudreau. //
// //
// ------------------------------------------------------------------------------//
#ifndef _PuncturedSmearedExp_h_
#define _PuncturedSmearedExp_h_
#include "CLHEP/GenericFunctions/AbsFunction.hh"
#include "CLHEP/GenericFunctions/Parameter.hh"
namespace Genfun {
/**
* @author
* @ingroup genfun
*/
class PuncturedSmearedExp: public AbsFunction {
FUNCTION_OBJECT_DEF(PuncturedSmearedExp)
public:
// Constructor
PuncturedSmearedExp();
// Copy constructor
PuncturedSmearedExp(const PuncturedSmearedExp &right);
// Destructor:
virtual ~PuncturedSmearedExp();
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
// Lifetime of exponential:
Parameter & lifetime();
const Parameter & lifetime() const;
// Width of the gaussian:
Parameter & sigma();
const Parameter & sigma() const;
// Puncture this thing:
void puncture(double min, double max);
// Get the puncture parameters:
Parameter & min(unsigned int i);
Parameter & max(unsigned int i);
const Parameter & min(unsigned int i) const;
const Parameter & max(unsigned int i) const;
private:
// These are for calculating mixing terms.
double pow(double x, int n) const ;
double erfc(double x) const ;
// It is illegal to assign an adjustable constant
const PuncturedSmearedExp & operator=(const PuncturedSmearedExp &right);
Parameter _lifetime;
Parameter _sigma;
std::vector<Parameter> _punctures;
};
} // namespace Genfun
#endif
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