phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-2019) Implement Build-in math function ln and log
Date Wed, 03 Jun 2015 02:25:49 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570155#comment-14570155
] 

James Taylor commented on PHOENIX-2019:
---------------------------------------

Same feedback as with your SQRT implementation. If you could make a pass through your Math
built-in function patches based on that review, that would be perfect.

> Implement Build-in math function ln and log
> -------------------------------------------
>
>                 Key: PHOENIX-2019
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2019
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Shuxiong Ye
>            Assignee: Shuxiong Ye
>             Fix For: 5.0.0, 4.5.0, 4.4.1
>
>         Attachments: 0001-PHOENIX-2019-Implement-Build-in-math-function-ln-and.patch
>
>
> Implement math build-in function, ln and log. Example show as below:
> ln(dp)	natural logarithm	ln(2.0)	0.693147180559945
> log(dp)	base 10 logarithm	log(100.0)	2
> log(b, x)	numeric logarithm to base b	log(2.0, 64.0)	6.0000000000



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message