numpy.reciprocal — NumPy v1.11 Manual (original) (raw)
numpy.reciprocal(_x_[, _out_]) = <ufunc 'reciprocal'>¶
Return the reciprocal of the argument, element-wise.
Calculates 1/x.
| Parameters: | x : array_like Input array. |
|---|---|
| Returns: | y : ndarray Return array. |
Notes
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.
Examples
np.reciprocal(2.) 0.5 np.reciprocal([1, 2., 3.33]) array([ 1. , 0.5 , 0.3003003])