nlcpy.right_shift

nlcpy.right_shift = <ufunc 'nlcpy_right_shift'>

Shifts bits of an integer to the right, element-wise.

Because the internal representation of numbers is in binary format, this operation is equivalent to multiplying x1/2^{x2}.

Parameters
x1, x2array_like

x1 is an input array or a scalar. x2 is the number of bits to remove at the right of x1. If x1.shape != x2.shape, they must be broadcastable to a common shape (which becomes the shape of the output).

outndarray or 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.

wherearray_like, optional

This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where the condition is False will remain uninitialized.

**kwargs

For other keyword-only arguments, see the section Optional Keyword Arguments.

Returns
yndarray

x1 with bits shifted x2 times to the right. If x1 and x2 are both scalars, this function returns the result as a 0-dimension ndarray.

参考

left_shift

Shifts bits of an integer to the left, element-wise.

注釈

  • If the values of x2 are greater equal than the bit-width of x1, this function returns zero.

  • If the values of x2 are negative numbers, undefined values are returned.

Examples

>>> import nlcpy as vp
>>> vp.right_shift(10, 1)
array(5)
>>> vp.right_shift(10, [1,2,3])
array([5, 2, 1])