Comparing Two Dates

To determine the difference in days between two dates, call the date difference function, date_diff():

long date_diff(date1_stp, date2_stp, format_stp)

UCHAR *date1_stp;

/* First date string

*/

UCHAR *date2_stp;

/* Second date string

*/

UCHAR *format_stp;

/* Date format string to use

*/

This function converts both dates to Julian dates and finds the difference with the formula:

difference = date2 -  date1