{{alias}}( x, n[, b] )
    Rounds a numeric value to the nearest number with `n` significant figures.

    Parameters
    ----------
    x: number
        Input value.

    n: integer
        Number of significant figures. Must be greater than 0.

    b: integer (optional)
        Base. Must be greater than 0. Default: 10.

    Returns
    -------
    y: number
        Rounded value.

    Examples
    --------
    > var y = {{alias}}( 3.14159, 3 )
    3.14
    > y = {{alias}}( 3.14159, 1 )
    3.0
    > y = {{alias}}( 12368.0, 2 )
    12000.0
    > y = {{alias}}( 0.0313, 2, 2 )
    0.03125

    See Also
    --------