sum

Returns the total of a sequence of numbers or durations

sum($arg as xs:anyAtomicType*) ➔ xs:anyAtomicType

Arguments
	$arg	xs:anyAtomicType*	The sequence of values to be totalled
Result		xs:anyAtomicType

sum($arg as xs:anyAtomicType*, $zero as xs:anyAtomicType?) ➔ xs:anyAtomicType?

Arguments
	$arg	xs:anyAtomicType*	The sequence of values to be totalled
	$zero	xs:anyAtomicType?	The value to return if the input sequence is empty (default integer zero)
Result		xs:anyAtomicType?

Links to W3C specifications

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

Applies to: XPath 2.0, XSLT 2.0, XQuery 1.0 and later versions

XPath 2.0 Functions and Operators

XPath 3.0 Functions and Operators

Notes on the Saxon implementation

The function is fully implemented according to the W3C specifications.