mindspore.ops.bessel_i0e

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mindspore.ops.bessel_i0e(x)[source]

Computes exponential scaled modified Bessel function of the first kind, order 0 element-wise.

The formula is defined as:

\[\begin{split}\begin{array}{ll} \\ \text I_{0}e(x)=e^{(-|x|)} * I_{0}(x)=e^{(-|x|)} * \sum_{m=0}^ {\infty} \frac{x^{2 m}}{2^{2 m} (m !)^{2}} \end{array}\end{split}\]

where \(I_{0}\) is modified Bessel function of the first kind, order 0.

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:

Ascend GPU CPU

Examples

>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> x = Tensor(np.array([-1, -0.5, 0.5, 1]), mindspore.float32)
>>> output = ops.bessel_i0e(x)
>>> print(output)
[0.46575961  0.64503527  0.64503527  0.46575961]