SGN

Determine Sign of Numeric Value

This numeric function returns +1, 0, or -1 indicating the sign of the specified numeric-value:

-1 if the value is negative. 0 if the value is 0.
+1 if the value is positive.

Syntax

SGN (numeric-value [,ERR=line-ref|,ERC=error-code])

numeric-value: is any number.
line-ref: is the program line number or label to branch to if an error is produced by this function.
error-code: is a programmer-defined error code. Valid values are positive or negative whole numbers.

SGN (23)

returns the value 1 for positive.

SGN (-.34)

returns the value -1 for negative.

SGN (X*4)

If X = -3, returns the value -1 for negative.

LET Z = SGN (INT (.76) )

assigns Z the value 0.