Tonix517 commented on a change in pull request #24994: [SPARK-28133] Adding inverse hyperbolic functions in SQL URL: https://github.com/apache/spark/pull/24994#discussion_r298755518
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala ########## @@ -617,6 +659,27 @@ case class Cot(child: Expression) """) case class Tanh(child: Expression) extends UnaryMathExpression(math.tanh, "TANH") +@ExpressionDescription( + usage = """ + _FUNC_(expr) - Returns inverse hyperbolic tangent of `expr`. + """, + arguments = """ + Arguments: + * expr - hyperbolic angle + """, + examples = """ + Examples: + > SELECT _FUNC_(0); + 0.0 + """) +case class Atanh(child: Expression) + extends UnaryMathExpression((x: Double) => 0.5 * math.log((1.0 + x) / (1.0 - x)), "ATANH") { Review comment: same as above. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org