/usr/include/CLHEP/GenericFunctions/Sigma.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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | // -*- C++ -*-
// $Id:
//--------------------------Sigma-------------------------------------------//
// //
// Sigma, result of addition of N functions //
// //
//--------------------------------------------------------------------------//
#ifndef Sigma_h
#define Sigma_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
namespace Genfun {
/**
* @author
* @ingroup genfun
*/
class Sigma : public AbsFunction {
FUNCTION_OBJECT_DEF(Sigma)
public:
// Constructor
Sigma();
// Copy constructor
Sigma(const Sigma &right);
// Destructor
virtual ~Sigma();
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const;
// Dimensionality
virtual unsigned int dimensionality() const;
// Derivative.
Derivative partial (unsigned int) const;
// Does this function have an analytic derivative?
virtual bool hasAnalyticDerivative() const {return true;}
// Add a function to the sum:
void accumulate (const AbsFunction & fcn);
private:
// It is illegal to assign a Sigma
const Sigma & operator=(const Sigma &right);
std::vector<const AbsFunction *> _fcn;
};
} // namespace Genfun
#endif
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