fn:round-half-to-even

round-half-to-even($arg as xs:numeric?) ➔ xs:numeric?

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

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

round-half-to-even($arg as xs:numeric?, $precision as xs:integer) ➔ xs: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	xs:numeric?	The value to be rounded to a given number of decimal places
	$precision	xs:integer	The number of decimal places required
Result		xs:numeric?

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