op:numeric-add - XPath XQuery Reference

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XPath/XQuery numeric-add function

Summary

Returns the arithmetic sum of its operands: ($arg1 + $arg2).

Operator Mapping

Defines the semantics of the "+" operator when applied to two numeric values

Signature

op:numeric-add(

$arg1 as xs:numeric,
$arg2 as xs:numeric

) as xs:numeric

Rules

General rules: see .

For xs:float or xs:double values, if one of the operands is a zero or a finite number and the other is INF or -INF, INF or -INF is returned. If both operands are INF, INF is returned. If both operands are -INF, -INF is returned. If one of the operands is INF and the other is -INF, NaN is returned.