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https://issues.apache.org/jira/browse/DERBY-2191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dyre Tjeldvoll updated DERBY-2191:
----------------------------------

    Attachment: bitopt.v1.stat
                bitopt.v1.diff

Attaching bitopt.v1 which introduces the unsigned arithmetic optimization 
discussed on derby-dev earlier. The optimization has been isolated in static 
utility methods. derbyall and suites.All pass.  

> Cleanup of FormatableBitSet
> ---------------------------
>
>                 Key: DERBY-2191
>                 URL: https://issues.apache.org/jira/browse/DERBY-2191
>             Project: Derby
>          Issue Type: Improvement
>          Components: Miscellaneous
>    Affects Versions: 10.2.1.6
>            Reporter: Dyre Tjeldvoll
>         Assigned To: Dyre Tjeldvoll
>            Priority: Trivial
>             Fix For: 10.3.0.0
>
>         Attachments: bitops.v1.diff, bitops.v1.stat, bitops.v2.diff, 
> bitops.v2.stat, bitops.v3.diff, bitopt.v1.diff, bitopt.v1.stat, 
> boundarycheck.v1.diff, boundarycheck.v1.stat, cleanup2191.diff, 
> cleanup2191.stat, deadcode.v1.diff, deadcode.v2.diff, fbstst.v1.diff, 
> fbstst.v1.stat, FormatableBitSetTest.java, unusedmethods.v1.diff, 
> unusedmethods.v1.stat, valuenotnull.v1.diff, valuenotnull.v1.stat
>
>
> The implementation of FormatableBitSet could be streamlined. Dead code can be 
> removed and the implementation of some methods can be simplified.

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