PSPP-BUG: [bug #41734] Handling of very large Values: pspp exports to e-notation, losing content

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?41734>

                 Summary: Handling of very large Values: pspp exports to
e-notation, losing content
                 Project: PSPP
            Submitted by: None
            Submitted on: Fri 28 Feb 2014 05:27:12 PM UTC
                Category: Numerical Errors
                Severity: 5 - Average
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
                  Effort: 0.00

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Details:

I found a few datasets (ab)using very large numbers in the order of
(e+15...e+19). Actually, they seem to contain codes that 
should be strings in the first place. But oh well. SPSS handles
them properly, the width is given as e.g. 22. 

While these numbers are handled by spss, I find them represented as numbers in
e-notation, but not with full precision. So I lose 
information and introduce errors (when expanding, the little 
end digits' info is gone).

Some cursory searches got me nowhere, so apologies if this is a known issue. I
tested on a recent nightly build from February 2014.

I think this should be easy to reproduce, so I do not give links to the
offending datasets -- their license does not allow  attaching them. If you
think otherwise, please ping me.

Thank you!




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