mars.tensor.reciprocal

mars.tensor.reciprocal(x, out=None, where=None, **kwargs)[source]

Return the reciprocal of the argument, element-wise.

Calculates 1/x.

x : array_like
Input tensor.
out : Tensor, None, or tuple of Tensor and 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 tensor is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.
where : array_like, optional
Values of True indicate to calculate the ufunc at that position, values of False indicate to leave the value in the output alone.

**kwargs

y : Tensor
Return tensor.

Note

This function is not designed to work with integers.

For integer arguments with absolute value larger than 1 the result is always zero because of the way Python handles integer division. For integer zero the result is an overflow.

>>> import mars.tensor as mt
>>> mt.reciprocal(2.).execute()
0.5
>>> mt.reciprocal([1, 2., 3.33]).execute()
array([ 1.       ,  0.5      ,  0.3003003])