Re: Missing delta time functionality

From: Bob Koehler (koehler_at_eisner.nospam.encompasserve.org)
Date: 10/03/03 

Date: 3 Oct 2003 12:48:08 -0500

In article <3F7D996D.31EB0B51@hp.com>, Guy Peleg <guy.peleg@hp.com> writes:
>
> Considering F$DELTA and F$CVTIME what other functionality do you think
> is missing for delta time calcualtion?
> We are currently planning the new features for next VMS version so here
> is your chance to affect the future.
>

   These aren't all delta times, but since your working in that area:

   $ a = "WEDNESDAY 10:00"
   $ b = "THURSDAY 13:00"
   $ c = f$delta(a,b)
   $ show symbol c
      1 03:00:00.000

   $ write f$cvtime("3-oct-2003",,"DOY") !(day of year)
   276

   $ write f$cvtime("3-oct-2003",,"LEAP_YEAR")
   False

   $ write f$cvtime("3-oct-2003 18:33:30",,"JULIAN_DAY")
   2452916.27326

      (reference http://aa.usno.navy.mil/data/docs/JulianDate.html, must
       be corrected for time zone)

   The following is cute, but does not have to be officially supported;
   also note the algorithm I have may be wrong.

   $ write f$cvtime("3-oct-2003 13:37:09",,"STAR_DATE")
   37895.7658

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