dpnp.sign

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

Computes an indication of the sign of each element x_i of input array x using the signum function.

The signum function returns -1 if x_i is less than 0, 0 if x_i is equal to 0, and 1 if x_i is greater than 0.

For full documentation refer to numpy.sign.

Parameters:

  • x ({dpnp.ndarray, usm_ndarray}) – Input array, expected to have numeric data type.

  • out ({None, dpnp.ndarray}, optional) – Output array to populate. Array must have the correct shape and the expected data type.

  • order ({"C", "F", "A", "K"}, optional) – Memory layout of the newly output array, if parameter out is None. Default: “K”.

Returns:

out – An array containing the element-wise results. The data type of the returned array is determined by the Type Promotion Rules.

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.

See also

dpnp.signbit

Returns element-wise True where signbit is set (less than zero).

Examples

>>> import dpnp as np
>>> np.sign(np.array([-5., 4.5]))
array([-1.0, 1.0])
>>> np.sign(np.array(0))
array(0)
>>> np.sign(np.array(5-2j))
array([1+0j])