minor error in photon_check

[Higginbottom]

I've been trying to debug a problem with py_pluto and was concerned to see that I was getting the error

photon_checks: 10000 of 10000 or 1.000000e+02 per cent of photons failed checks

on further investigation, I discovered only one or two photons were ending up with negative frequencies. This is bad, and I'll see what is going on, but there arent 100% of photons failing.

The reason for the exaggerated error message is a small error on line 1469 of photon_gen.c:

if (nnn == 0)
Debug ("photon_checks: All photons passed checks successfully\n");
else
{
Log ("photon_checks: %d of %d or %e per cent of photons failed checks\n", nn, NPHOT, nn * 100. / NPHOT);
}

nnn is a counter for photons that have errored. So the log should be

Log ("photon_checks: %d of %d or %e per cent of photons failed checks\n", nnn, NPHOT, nnn * 100. / NPHOT);

otherwise it doesn't matter how many error, the report always says 100% have errored.
Fiuxing...