mxnet.np.log2¶
-
log2
(x, out=None, **kwargs)¶ Base-2 logarithm of x.
- Parameters
x (ndarray or scalar) – Input values.
out (ndarray or None) – A location into which the result is stored. If provided, it must have the same shape and type as the input. If not provided or None, a freshly-allocated array is returned.
- Returns
y (ndarray) – The logarithm base two of x, element-wise. This is a scalar if x is a scalar.
.. note:: – This function differs from the original numpy.log2 in the following way(s):
only ndarray or scalar is accpted as valid input, tuple of ndarray is not supported
broadcasting to out of different shape is currently not supported
when input is plain python numerics, the result will not be stored in the out param
Examples
>>> x = np.array([0, 1, 2, 2**4]) >>> np.log2(x) array([-inf, 0., 1., 4.])
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