# 22. Virtuoso Functions Guide - sign

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## sign

returns -1, 0, or 1 depending on the sign of its numerical
sign ( num numeric);
Description

sign returns either -1, 0 or 1 depending whether its numeric argument is negative, zero or positive.

    sign(-12)			-> -1
    sign(0)				-> 0
    sign(910)			-> 1
    sign(atof('-1.23456789'))	-> -1
    sign(0.0)			-> 0