fn:round

round($arg as numeric?) ➔ numeric?

Rounds a numeric value to the nearest whole number, rounding x.5 towards positive infinity.

Arguments
	$arg	numeric?	The value to be rounded to the nearest whole number
Result		numeric?

round($arg as numeric?, $precision as xs:integer) ➔ numeric?

Rounds a numeric value to the nearest multiple of ten to the power of minus $precision, rounding x.5 towards positive infinity.

Arguments
	$arg	numeric?	The value to be rounded to a given number of decimal places
	$precision	xs:integer	The number of decimal places required
Result		numeric?

http://www.w3.org/2005/xpath-functions

The two-argument form of this function is specified in XPath 3.0, and is available since Saxon 9.3, provided XPath 3.0 is enabled.