JSOD11 commented on issue #19163:
URL: https://github.com/apache/datafusion/issues/19163#issuecomment-3690788892

   I think this one may also not need changes for the same reason as 
https://github.com/apache/datafusion/issues/19165 and 
https://github.com/apache/datafusion/issues/19164.
   
   I see `Expm1` defined 
[here](https://github.com/apache/spark/blob/316322cbcb55ff5c1b4e479bc2aae12babdae534/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L526)
 extending `UnaryMathExpression` defined 
[here](https://github.com/apache/spark/blob/316322cbcb55ff5c1b4e479bc2aae12babdae534/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L66)
 with `nullIntolerant` and `nullable` true.
   
   Is it correct that `expm1` also does not need changes?
   cc @Jefffrey


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