mindspore.ops.BesselK1e

class mindspore.ops.BesselK1e[source]

Computes exponential scaled modified Bessel function of the second kind, order 1 element-wise.

The formula is defined as:

\[\begin{split}\begin{array}{ll} \\ K_{1}e(x)= e^{(-|x|)} * K_{1}(x) = e^{(-|x|)} * \int_{0} ^{\infty} e^{-x \cosh t} \cosh (t) d t \end{array}\end{split}\]

where \(K_{1}\) is modified Bessel function of the second kind, order 1.

Warning

This is an experimental API that is subject to change or deletion.

Inputs:

x (Tensor) - The input tensor. Data type must be float16, float32, float64.

Outputs:

Tensor, has the same shape as x.

Raises: TypeError – If x is not a Tensor of float16, float32, float64.

Supported Platforms:: GPU CPU

Examples

>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> bessel_k1e = ops.BesselK1e()
>>> x = Tensor(np.array([0.24, 0.83, 0.31, 0.09]), mindspore.float32)
>>> output = bessel_k1e(x)
>>> print(output)
[ 4.9821286  1.8675754  4.0140023 12.008413 ]