dongjoon-hyun edited a comment on issue #25041: [SPARK-28133][SQL] Add 
acosh/asinh/atanh functions to SQL
URL: https://github.com/apache/spark/pull/25041#issuecomment-510663213
 
 
   Only for `-Infinity` for `asinh`.
   ```
   spark-sql> SELECT asinh(double('-Infinity'));
   NaN                             (PostgreSQL returns `-Infinity`).
   ```
   
   For `+Infinity` for `asinh/acosh`, the results are already the same. Spark 
returns `+Infinity` like PostgreSQL. There is no need to add an extra code to 
handle them.

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