Policy Server Guides › Policy Server Configuration Guide › Attributes and Expressions Reference › Functions Available within Expressions › SIGN Function--Return the Sign of a Number

SIGN Function--Return the Sign of a Number

The SIGN function accepts a number. If the number is negative, SIGN returns a negative one. If the number is zero, SIGN returns a zero. If the number is positive, SIGN returns a positive one.

Syntax

The SIGN function has the following format:

SIGN(number)

Parameters

The SIGN function accepts the following parameter:

number (number)

Return Value

The SIGN function returns a number: -1, 0, or +1.

Example

Return_value=SIGN(-40)
Return_value=-1

Return_value=SIGN(0)
Return_value=0

Return_value=SIGN(999)
Return_value=1