numpy.signbit¶
- numpy.signbit(x[, out]) = <ufunc 'signbit'>¶
Returns element-wise True where signbit is set (less than zero).
Parameters: x : array_like
The input value(s).
out : ndarray, optional
Array into which the output is placed. Its type is preserved and it must be of the right shape to hold the output. See doc.ufuncs.
Returns: result : ndarray of bool
Output array, or reference to out if that was supplied.
Examples
>>> np.signbit(-1.2) True >>> np.signbit(np.array([1, -2.3, 2.1])) array([False, True, False], dtype=bool)