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ZBasic System Library 255 ZX Microcontroller Family Signum Type Function returning the same type as the first parameter. Invocation Signum(val) Parameter Method Type Description val ByVal signed The value to be tested for positive, zero, negative. Discussion This function returns +1, 0 or –1 depending on whether the value provided is positive, zero or negative. The type of the return value will be the same as the type of the parameter value. Example Dim i as Integer, j as Integer i = -23 j = Signum(i) ' result will be -1 Compatibility This function is not available in BasicX compatibility mode.