double calendar_gregorian_to_offset (int y, int m, int d,
calendar_error_func *, void *aux);
-void calendar_offset_to_gregorian (int ofs, int *y, int *m, int *d);
+void calendar_offset_to_gregorian (int ofs, int *y, int *m, int *d, int *yd);
int calendar_offset_to_year (int ofs);
int calendar_offset_to_month (int ofs);
int calendar_offset_to_mday (int ofs);
int calendar_offset_to_yday (int ofs);
int calendar_offset_to_wday (int ofs);
+int calendar_days_in_month (int y, int m);
+
#endif /* calendar.h */