Github user misutoth commented on a diff in the pull request: https://github.com/apache/spark/pull/20618#discussion_r168525504 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala --- @@ -1313,131 +1313,178 @@ object functions { ////////////////////////////////////////////////////////////////////////////////////////////// /** - * Computes the cosine inverse of the given value; the returned angle is in the range - * 0.0 through pi. + * @param e the value whose arc cosine is to be returned + * @return cosine inverse of the given value in the range of 0.0 through pi, --- End diff -- Ok. Then I will cut the part about the domains and ranges.
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