1 SGN
 The SGN function determines whether  a  numeric  expression  is  positive,
 negative,  or  zero.   It  returns  a one if the expression is positive, a
 minus one if the expression is negative, and zero  if  the  expression  is
 zero.

 Example

 Sign% = SGN(-45 * 35 / 6 - 3000)

2 Syntax

     int-var = SGN(real-exp)