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# Sgn Function

Returns an integer number +1, 0 or -1 indicating whether the number that is passed to the function is positive, zero or negative respectively.

## Syntax:

    Sgn (Number)

## Return value:

Integer

## Parameters:

Number: Numeric expression that determines the value that is returned by the function.

Number | Return value
negative | Sgn returns -1.
0 | Sgn returns 0.
positive | Sgn returns 1.

### Error codes:

5 Invalid procedure call

## Example:

    Sub ExampleSgn
        Print sgn(-10) ' returns -1
        Print sgn(0) ' returns 0
        Print sgn(10) ' returns 1
    End Sub