def METHOD_NAME(self):
    """Returns the log of the prior-weighted likelihood ratio at the
    current parameter values.
    The logprior is calculated first. If the logprior returns ``-inf``
    (possibly indicating a non-physical point), then ``loglr`` is not
    called.
    """
    logp = self.logprior
    if logp == -numpy.inf:
        return logp
    else:
        return logp + self.loglr