4 double calendar_gregorian_to_offset (int y, int m, int d, char **errorp);
5 void calendar_offset_to_gregorian (int ofs, int *y, int *m, int *d, int *yd);
6 int calendar_offset_to_year (int ofs);
7 int calendar_offset_to_month (int ofs);
8 int calendar_offset_to_mday (int ofs);
9 int calendar_offset_to_yday (int ofs);
10 int calendar_offset_to_wday (int ofs);
12 int calendar_days_in_month (int y, int m);
14 #endif /* calendar.h */