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Futurebasic/Language/Reference/sgn
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SGN
Syntax
signOfExpr = SGN(expr)
Description
Use this function to determine the "sign" of expr. SGN returns:
1 if expr is positive;
0 if expr is zero;
-1 if expr is negative.
Example
This loop counts up if first, and counts down if last:
<code><b>FOR</b> x = first <b>TO</b> last <b>STEP</b> <b>SGN</b>(last-first)<br>
<b> PRINT</b> x<br>
<b>NEXT</b></code>
See Also
FOR; ABS