Sgn

Sgn(X)

The Sgn internal function returns a value which identifies whether a numeric value is negative, positive or zero. The returned values are as follows:

-1 if X is negative
0 if X is zero
1 if X is positive

SGN is affected by the value of the BRConfig.sys RD specification. For instance, if RD were set to 6 (the default), the value returned by the following SGN function would be 1 (positive). But if RD were set to 3, the returned value would be 0: