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paddle. isfinite ( x: Tensor, name: str | None = None ) → Tensor [source]

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Return whether every element of input tensor is finite number or not.

Parameters

• x (Tensor) – The input tensor, it’s data type should be float16, float32, float64, int32, int64, complex64, complex128.

• name (str|None, optional) – Name for the operation (optional, default is None). For more information, please refer to Name.

Returns

Tensor, the bool result which shows every element of x whether it is finite number or not.

Examples

>>> import paddle

>>> x = paddle.to_tensor([float('-inf'), -2, 3.6, float('inf'), 0, float('-nan'), float('nan')])
>>> out = paddle.isfinite(x)
>>> out
Tensor(shape=[7], dtype=bool, place=Place(cpu), stop_gradient=True,
[False, True , True , False, True , False, False])