numpy.signbit(x[, out]) =
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 |
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Returns: |
result : ndarray of bool Output array, or reference to |
>>> np.signbit(-1.2) True >>> np.signbit(np.array([1, -2.3, 2.1])) array([False, True, False], dtype=bool)
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https://docs.scipy.org/doc/numpy-1.12.0/reference/generated/numpy.signbit.html