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https://issues.apache.org/jira/browse/SPARK-23329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-23329.
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Resolution: Fixed
Fix Version/s: 2.4.0
2.3.1
Fixed in https://github.com/apache/spark/pull/20618
> Update the function descriptions with the arguments and returned values of
> the trigonometric functions
> ------------------------------------------------------------------------------------------------------
>
> Key: SPARK-23329
> URL: https://issues.apache.org/jira/browse/SPARK-23329
> Project: Spark
> Issue Type: Documentation
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Assignee: Mihaly Toth
> Priority: Minor
> Labels: starter
> Fix For: 2.3.1, 2.4.0
>
>
> We need an update on the function descriptions for all the trigonometric
> functions. For example, {{cos}}, {{sin}}, and {{cot}}. Internally, the
> implementation is based on the java.lang.Math. We need a clear description
> about the units of the input arguments and the returned values.
> For example, the following descriptions are lacking such info.
> https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L551-L555
> https://github.com/apache/spark/blob/d5861aba9d80ca15ad3f22793b79822e470d6913/sql/core/src/main/scala/org/apache/spark/sql/functions.scala#L1978
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