Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20618#discussion_r168670009
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
---
@@ -196,7 +208,13 @@ case class Asin(child: Expression) extends
UnaryMathExpression(math.asin, "ASIN"
// scalastyle:off line.size.limit
@ExpressionDescription(
- usage = "_FUNC_(expr) - Returns the inverse tangent (a.k.a.
arctangent).",
+ usage = "_FUNC_(expr) - Returns the inverse tangent (a.k.a. arc tangent)
of `expr`, " +
+ "as if computed by `java.lang.Math._FUNC_`.",
+ arguments =
--- End diff --
Could we just save one line and stick to the same indentation?
```scala
arguments = """
Arguments:
* expr - number whose arc tangent is to be returned.
""",
examples = """
...
```
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