Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/14705#discussion_r75424303
--- Diff: R/pkg/R/functions.R ---
@@ -1273,12 +1271,15 @@ setMethod("round",
#' bround
#'
#' Returns the value of the column `e` rounded to `scale` decimal places
using HALF_EVEN rounding
-#' mode if `scale` >= 0 or at integral part when `scale` < 0.
+#' mode if `scale` >= 0 or at integer part when `scale` < 0.
#' Also known as Gaussian rounding or bankers' rounding that rounds to the
nearest even number.
#' bround(2.5, 0) = 2, bround(3.5, 0) = 4.
#'
#' @param x Column to compute on.
-#'
+#' @param scale round to \code{scale} digits to the right of the decimal
point when \code{scale} > 0,
+#' the nearest even number when \code{scale} = 0, and `scale`
digits to the left
+#' of the decimal point when \code{scale} < 0.
+#' @param ... further arguments to be passed to or from other methods.
--- End diff --
should this be
`@param ... currently not used.`
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