Github user misutoth commented on a diff in the pull request:
https://github.com/apache/spark/pull/20618#discussion_r171991647
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
---
@@ -512,7 +529,11 @@ case class Rint(child: Expression) extends
UnaryMathExpression(math.rint, "ROUND
case class Signum(child: Expression) extends
UnaryMathExpression(math.signum, "SIGNUM")
@ExpressionDescription(
- usage = "_FUNC_(expr) - Returns the sine of `expr`.",
+ usage = "_FUNC_(expr) - Returns the sine of `expr`, as if computed by
`java.lang.Math._FUNC_`.",
--- End diff --
As far as the trigonometric functions concerned they should be now in sync
I think.
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