SGN Function

SGN(integer-expression)

Returns the sign of an integer expression:

• -1 if the expression is negative
• 0 if the expression is zero
• 1 if the expression is positive

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Examples

PRINT SGN(-42)

Produces -1.

PRINT SGN(0)

Produces 0.

PRINT SGN(1234)

Produces 1.

REM Use SGN in a comparison
balance = -150
IF SGN(balance) = -1 THEN
    PRINT "Account overdrawn!"
ENDIF

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Notes

• Input must be an integer expression.
• Return value is always -1, 0, or 1.
• Can be used in compact conditionals or arithmetic to simplify sign handling.

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See also: ABS · INT · ROUND