Xiao Li created SPARK-23329:
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Summary: 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
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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