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SGN Sign of Number
y = SGN(numexpr)
Returns the sign of its numeric argument.
numexpr A numeric expression.
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Notes: If numexpr is positive, SGN(numexpr) returns 1.
If numexpr is 0, SGN(numexpr) returns 0.
If numexpr is negative, SGN(numexpr) returns -1.
See Also:
ON...GOSUB
ON...GOTO
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