Function ReferenceSIGNOn this pageSIGN Returns the sign of a number: 1 for positive, -1 for negative, 0 for zero. CategoryMathSyntaxSIGN(number) Parameters ParameterRequiredDescriptionnumberRequiredAny real number. Example SIGN(-5) // → -1SIGN(3) // → 1SIGN(0) // → 0 Auto-generated from the EngCanvas function registry.