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mindspore.ops.BesselK1e

class mindspore.ops.BesselK1e

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

The formula is defined as:

$$\begin{array}{r}\begin{array}{l}\\ K_{1}e(x)=e^{(-|x|)}\ast K_1(x)=e^{(-|x|)}\ast {\int }_0^{\mathrm{\infty }}{e}^{-x\cosh t}\cosh (t)dt\end{array}\end{array}$$

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 ]