FA> ** The world began in 1900...according to time.h

Not quite. The actual epoch date can be anything, according to the fancy of
the vendor. You can't rely on a specific epoch date. Most compilers -
certainly all under UNIX I've ever used - use 01-Jan-1970 as their epoch.
It may differ on other platforms. Microsoft 7.0 uses 1900, but earlier and
later versions of the same compiler use 1970. AFAIK, Borland and Watcom
have always used 1970.


 FA> long Date_Diff(struct dosDate *d1,struct dosDate *d2)
 FA> {
 FA>  double y1 = d1->year + (d1->month - 2.85) / 12;
 FA>  double y2 = d2->year + (d2->month - 2.85) / 12;
 FA>  long a =
 FA> (long)
 FA>  ((long)
 FA>   ((long)(367 * y1)-1.75 * y1 + d1->day)-0.75 * (0.01 * y1)) + 1721119L;

Won't you run into problems with rounding mixing float/doubles with long?

I honestly don't know since never tried myself. I tend to stick with
integer math wherever possible, and in this case you don't really need
floating point anyway.

--- MaltEd/2 1.0.b6