mgaido91 commented on issue #25041: [SPARK-28133][SQL] Add acosh/asinh/atanh 
functions to SQL
URL: https://github.com/apache/spark/pull/25041#issuecomment-511225864
 
 
   @dongjoon-hyun , thanks for checking. I agree with you that case 1, which is 
the bug reported to janino cannot happen here, so it is not an issue here. I am 
more worried about case 2. Because case 2 depends on what is the input of the 
function and I think it is hard to predict.
   
   >  Do you have a counter-example?
   
   No I don't have honestly. So I'd prefer the `if` syntax to be on the safe 
side. We can also go ahead like this if you think it is fine and eventually 
change it later if an issue shows up.

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