{{alias}}( x )
    Tests if a finite double-precision floating-point number is a nonpositive
    integer.

    The function assumes a finite number. If provided negative infinity, the
    function will return `true`, when, in fact, the result is undefined.

    The function does not distinguish between positive and negative zero.

    Parameters
    ----------
    x: number
        Value to test.

    Returns
    -------
    bool: boolean
        Boolean indicating whether the value is a nonpositive integer.

    Examples
    --------
    > var bool = {{alias}}( -1.0 )
    true
    > bool = {{alias}}( 0.0 )
    true
    > bool = {{alias}}( 10.0 )
    false

    See Also
    --------