This is documentation for an old release of NumPy (version 1.15.0). Read this page in the documentation of the latest stable release (version > 1.17).
numpy.signbit¶
-
numpy.
signbit
(x, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj]) = <ufunc 'signbit'>¶ Returns element-wise True where signbit is set (less than zero).
Parameters: - x : array_like
The input value(s).
- out : ndarray, None, or tuple of ndarray and None, optional
A location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.
- where : array_like, optional
Values of True indicate to calculate the ufunc at that position, values of False indicate to leave the value in the output alone.
- **kwargs
For other keyword-only arguments, see the ufunc docs.
Returns: - result : ndarray of bool
Output array, or reference to out if that was supplied. This is a scalar if x is a scalar.
Examples
>>> np.signbit(-1.2) True >>> np.signbit(np.array([1, -2.3, 2.1])) array([False, True, False])