* On 2002.03.27, in <[EMAIL PROTECTED]>, * "Mark J. Reed" <[EMAIL PROTECTED]> wrote: > On Thu, Mar 28, 2002 at 02:07:59AM +0100, Sven Guckes wrote: > > > > $ TIMEFMT="%D" ./timediff "4/6/67" "3/28/02" > > Difference is 11773.96 days. > Besides the fraction, that's just plain wrong. > 1967-04-06 to 2002-03-28 is 12,775 days. Maybe > your %D is not the same as his %D? Where did 'timediff' come from?
I made timediff up on request. The problem here is probably that the calculations are based on "unix time" -- the seconds since 1/1/1970, midnight GMT. The program just doesn't have good error checking, since it was such a quickie. shell$ env TZ=GMT perl -e 'require "ctime.pl";$t = 0x7fffffff; print ctime($t);' Tue Jan 19 3:14:07 GMT 2038 shell$ env TIMEFMT="%m/%d/%Y %H:%M:%S" ./timediff "1/19/2038 3:14:07" "3/28/2002 00:00:00" Difference is 11774.25 days. Pretty close to Sven's example. Artifacts of the absolution of |t1-t2|, and the fact that strptime() can't make much of a pre-1970 date, because it has to convert it into post-1970 structures. -- -D. [EMAIL PROTECTED] NSIT University of Chicago
