def _log_cdf(self, x): return math_ops.log1p( 2 / np.pi * math_ops.atan(self._z(x))) - np.log(2)
def _log_cdf(self, x): return math_ops.log1p(2 / np.pi * math_ops.atan(self._z(x))) - np.log(2)
def _cdf(self, x): return math_ops.atan(self._z(x)) / np.pi + 0.5
def _cdf(self, x): return math_ops.atan(self._z(x)) / np.pi + 0.5