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https://issues.apache.org/jira/browse/LUCENE-3179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13045674#comment-13045674
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Yonik Seeley commented on LUCENE-3179:
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bq. And the so called hand crafted method is identical in src.jar and Yonik's
code.
For pop, yes. But not for ntz or pop_array and friends.
BitUtil.pop exists because this was originally written to work with java1.4
which didn't have Long.bitCount()
http://markmail.org/message/5ay4m2thsvsahk3c
> OpenBitSet.prevSetBit()
> -----------------------
>
> Key: LUCENE-3179
> URL: https://issues.apache.org/jira/browse/LUCENE-3179
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Paul Elschot
> Priority: Minor
> Fix For: 3.3
>
> Attachments: LUCENE-3179.patch
>
>
> Find a previous set bit in an OpenBitSet.
> Useful for parent testing in nested document query execution LUCENE-2454 .
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