mindspore.ops.bessel_k1e

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mindspore.ops.bessel_k1e(x)[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.

Parameters

x (Tensor) – The input tensor. The data type must be float16, float32 or float64.

Returns

Tensor, has the same shape and dtype as the x.

Raises

  • TypeError – If x is not a Tensor.

  • TypeError – If dtype of x is not float16, float32 or float64.

Supported Platforms:

GPU CPU

Examples

>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> x = Tensor(np.array([0.5, 1., 2., 4.]), mindspore.float32)
>>> output = ops.bessel_k1e(x)
>>> print(output)
[2.73100971  1.63615349  1.03347685  0.68157595]