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Posted to dev@lucene.apache.org by "Yonik Seeley (JIRA)" <ji...@apache.org> on 2013/02/26 21:16:15 UTC
[jira] [Comment Edited] (LUCENE-4800) FloatDocValues does not
return true for 0 >< 1 values
[ https://issues.apache.org/jira/browse/LUCENE-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13587481#comment-13587481 ]
Yonik Seeley edited comment on LUCENE-4800 at 2/26/13 8:16 PM:
---------------------------------------------------------------
bq. the current patch will return 'true' for NaN
heh - good catch. Changing to !(floatValue(doc) == 0) should work.
edit: actually I'm not sure we want NaN to return false... I just tried C, and NaN evaluates to true. Only 0 evaluates to false.
was (Author: yseeley@gmail.com):
bq. the current patch will return 'true' for NaN
heh - good catch. Changing to !(floatValue(doc) == 0) should work.
> FloatDocValues does not return true for 0 >< 1 values
> -----------------------------------------------------
>
> Key: LUCENE-4800
> URL: https://issues.apache.org/jira/browse/LUCENE-4800
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 5.0
> Environment: 5.0-SNAPSHOT 1427825:1444730M - markus - 2013-02-11 11:39:54
> Reporter: Markus Jelsma
> Fix For: 5.0
>
> Attachments: LUCENE-4800-trunk.patch
>
>
> The following function query should always yield 1 if the document's field matchers the query:
> {code}if(query({!lucene df=FIELD v=$q},0),1,0){code}
> This is, however, not true if due to low IDF the score end up below 1 but, obviously, above 0. The if() statement does not recognize a number between zero and one as positive and therefore TRUE.
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