/usr/include/CLHEP/GenericFunctions/Legendre.icc 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 | // -*- C++ -*-
// $Id:
#include "gsl/gsl_sf_legendre.h"
#include <cmath>
#include <signal.h>
#include <assert.h>
namespace Genfun {
FUNCTION_OBJECT_IMP(Legendre)
inline
Legendre::Legendre(unsigned int order):
_order(order)
{
}
inline
Legendre::~Legendre() {
}
inline
Legendre::Legendre(const Legendre & right):
_order(right._order)
{
}
inline
double Legendre::operator() (double x) const {
gsl_sf_result result;
int status = gsl_sf_legendre_Pl_e(_order,x, &result);
if (status!=0) {
std::cerr << "Warning, GSL function gsl_sf_legendre_e"
<< " return code" << status << std::endl;
raise(SIGFPE);
}
return result.val;
}
} // end namespace Genfun
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