lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Paul Elschot (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1410) PFOR implementation
Date Mon, 06 Oct 2008 17:43:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637149#action_12637149
] 

Paul Elschot commented on LUCENE-1410:
--------------------------------------

I can't see the .tgz attachment at the moment.

Very nice table, this java/c++ comparison. Meanwhile I also have a java program generator
for decompression, and I got very similar results.

I found a bug for the 17 bits case in decodeAnyFrame(), this might explain the sum test failure
that you saw.

One detail on the generated code: the final mask can be omitted, for example the last bit
extraction for the 5 bit case:
.bq (i4 >>> 27)
On the java side leaving this last mask out did not make a difference, but it might be noticeable
in c++.


> PFOR implementation
> -------------------
>
>                 Key: LUCENE-1410
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1410
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Other
>            Reporter: Paul Elschot
>            Priority: Minor
>         Attachments: LUCENE-1410b.patch, TestPFor2.java, TestPFor2.java, TestPFor2.java
>
>   Original Estimate: 21840h
>  Remaining Estimate: 21840h
>
> Implementation of Patched Frame of Reference.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org


Mime
View raw message