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abs

Returns the absolute value of a numeric value.

fn:abs(arg)

The following table describes the argument for this command:

Argument	Required/Optional	Description
arg	Required	Numeric datatype. Returns the absolute value of a number. You can enter any valid expression.

If you pass the argument as negative, it returns a negative argument value. Otherwise, returns a positive argument value.

If type of argument is one of the four numeric types

xs:float

xs:double

xs:decimal

, or

xs:integer

, the type of the result is the same as the type of argument.

If the type of argument is a type derived from one of the numeric types, the result is an instance of the base numeric type.

NULL if you pass a null value to the function.

The following table lists some sample values and return values:

The following expression returns the difference between two numbers as a positive value, regardless of which number is larger:

fn:abs( PRICE - COST )

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