The arrays associated with the macros:
#define days_of_week(n) (&_days_of_week[_days_of_week_idx[n]])
#define months_of_year(n) (&_months_of_year[_months_of_year_idx[n]])
appear to be undefined. days_of_week and month_of_year appear to be defined in utz.c, although the name is different. The *_idx arrays don't exist at all.
The arrays associated with the macros:
appear to be undefined.
days_of_weekandmonth_of_yearappear to be defined in utz.c, although the name is different. The*_idxarrays don't exist at all.