dpnp.bitwise_count

dpnp.bitwise_count(x, out=None, where=True, order='K', dtype=None, subok=True, **kwargs)

Computes the number of 1-bits in the absolute value of x.

For full documentation refer to numpy.bitwise_count.

Parameters:

  • x ({dpnp.ndarray, usm_ndarray}) -- Input array, expected to have integer or boolean data type.

  • out ({None, dpnp.ndarray, usm_ndarray}, optional) --

    Output array to populate. Array must have the correct shape and the expected data type.

    Default: None.

  • order ({"C", "F", "A", "K"}, optional) --

    Memory layout of the newly output array, if parameter out is None.

    Default: "K".

Returns:

out -- The corresponding number of 1-bits in the input. Returns uint8 for all integer types.

Return type:

dpnp.ndarray

Limitations

Parameters where and subok are supported with their default values. Keyword argument kwargs is currently unsupported. Otherwise NotImplementedError exception will be raised.

Examples

>>> import dpnp as np
>>> a = np.array(1023)
>>> np.bitwise_count(a)
array(10, dtype=uint8)

>>> a = np.array([2**i - 1 for i in range(16)])
>>> np.bitwise_count(a)
array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15],
      dtype=uint8)