Sgn

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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 positve

Example

00010 print SGN(-3)
00020 print SGN(0)
00030 print SGN(6.5)

Output:

-1
0
1

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.