Sign   built-in function

The Sign function returns the sign of a numeric argument. The returned value is:
  -1 when the number is negative
   0 when the number is negative
   1 when the number is positive

result = Sign( number )

Examples: say Sign( 42 ) -- shows: 1 say Sign( 42 - 44 ) -- shows: -1 say Sign( 42 * 0 ) -- shows: 0