mindspore.ops.bessel_i0

mindspore.ops.bessel_i0(x)

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

$$\begin{array}{r}\begin{array}{l}\\ I_0(x)=J_0(\mathrm{i}x)=\sum _{m=0}^{\mathrm{\infty }}\frac{x^{2m}}{2^{2m}(m!{)}^2}\end{array}\end{array}$$

where $J_0$ is 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:

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_i0(x)
>>> print(output)
[1.266066  1.0634835 1.0634835 1.266066]