On 05/19/2017 04:28 PM, R.S. wrote:
> Just curious: the formulas can give fractional values. How to round them?
> OK, I assume the physrec/trk should be rounded down, but what about D?
>
> Regards
> --
> Radoslaw Skorupka
>
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The missing piece of information that should have been with the
equations for K and D is "Each equation is rounded up to an integer
value." (from 3390 Reference Summary) - the equivalent of applying the
mathematical Ceiling function. Space on a real IBM 3390 track was
allocated in cells of 34 bytes, so if your data for key or data portion
needed a little bit of another cell the entire next cell on the track
had to be allocated.
Joel C. Ewing
--
Joel C. Ewing, Bentonville, AR jcew...@acm.org
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