mindspore.ops.isnan

mindspore.ops.isnan(x)[source]

Determines which elements are NaN for each position.

\[\begin{split}out_i = \begin{cases} & \ True,\ \text{ if } x_{i} = \text{Nan} \\ & \ False,\ \text{ if } x_{i} \ne \text{Nan} \end{cases}\end{split}\]

where \(Nan\) means not a number.

Parameters

x (Tensor) – The input tensor. \((N,*)\) where \(*\) means, any number of additional dimensions.

Returns

Tensor, has the same shape of input, and the dtype is bool.

Raises

TypeError – If x is not a Tensor.

Supported Platforms:

Ascend GPU CPU

Examples

>>> x = Tensor(np.array([np.log(-1), 1, np.log(0)]), mindspore.float32)
>>> output = ops.isnan(x)
>>> print(output)
[ True False False]