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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)