SGN
SGN%
SIGN

Syntax: SGN (x)
   and: SGN% (x)
   and: SIGN (x)
Location: Math Package (SGN)
          SGN (SGN%)
          Btool (SIGN)

All three functions return the sign of any valid number.

The sign is defined as 1 for positive numbers, -1 for negative and 0 if the number is zero.
