@classmethod
def validscale(cls, v):
    """Check SCALEMIN<=SCALEMAX, and both in range for CDF datatype.

        Compares `SCALEMIN
        <https://spdf.gsfc.nasa.gov/istp_guide/vattributes.html#SCALEMIN>`_
        to ``SCALEMAX`` to make sure it isn't larger and both are
        within range of the variable CDF datatype.

        Parameters
        ----------
        v : :class:`~spacepy.pycdf.Var`
            Variable to check

        Returns
        -------
        list of str
            Description of each validation failure.

        """
    return cls._validhelper(v, False)
