cal_to_jd
Description
int cal_to_jd ( int calendar, int month, int day, int year )
cal_to_jd() calculates the Julian day count
for a date in the specified calendar.
Supported calendars are
CAL_GREGORIAN,
CAL_JULIAN,
CAL_JEWISH and
CAL_FRENCH.
Parameters
calendarCalendar to convert from, one of CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH or CAL_FRENCH.
monthThe month as a number, the valid range depends on the
calendardayThe day as a number, the valid range depends on the
calendaryearThe year as a number, the valid range depends on the
calendar
