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#ifndef LIKELIHOOD_H
#define LIKELIHOOD_H
#include "event.h"
#include <stddef.h> /* for size_t */
/* Maximum number of PE to consider if the PMT was hit. */
#define MAX_PE 100
/* Maximum number of PE to consider if the PMT wasn't hit.
*
* Note: This must be less than MAX_PE. */
#define MAX_PE_NO_HIT 10
/* To speed things up we quit calculating the probability of a hit when the
* ratio between the current probability and the maximum probability is less
* than 10**(-MIN_RATIO). So if MIN_RATIO is -10, that means that we ignore
* probabilities which are 10 million times less likely than the most probable
* value for n. */
#define MIN_RATIO -10
/* Roughly equal to the fraction of light which is reflected at each PMT.
*
* Note: The proper thing to do here would be to separately integrate over the
* track to calculate the amount of reflected light using the data from the
* PMTR bank. However, this would make the likelihood function almost twice as
* long, so we just assume a constant fraction of the light is reflected now. */
#define CHARGE_FRACTION 0.3
/* Dark rate of the PMTs (Hz).
*
* From pmt_response.dat in SNOMAN. */
#define DARK_RATE 1000.0
/* Single PE transit time spread (ns).
*
* From pmt_response.dat in SNOMAN. */
#define PMT_TTS 1.61
/* Event window (ns) */
#define GTVALID 400.0
#define BETA_MIN 0.8
double nll_muon(event *ev, double T0, double *pos, double *dir, double t0, double *z1, double *z2, size_t n, double epsrel, int fast);
#endif
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