isreal

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

Tests if each element of input is a real number or not.

Parameters

• x (Tensor) – The input Tensor. Alias: input.

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

Returns

out (Tensor), The output Tensor. Each element of output indicates whether the input element is a real number or not.

Examples

>>> import paddle
>>> paddle.set_device('cpu')
>>> x = paddle.to_tensor([-0.0, -2.1, 2.5], dtype='float32')
>>> res = paddle.isreal(x)
>>> print(res)
Tensor(shape=[3], dtype=bool, place=Place(cpu), stop_gradient=True,
[True, True, True])

>>> x = paddle.to_tensor([(-0.0 + 1j), (-2.1 + 0.2j), (2.5 - 3.1j)])
>>> res = paddle.isreal(x)
>>> print(res)
Tensor(shape=[3], dtype=bool, place=Place(cpu), stop_gradient=True,
[False, False, False])

>>> x = paddle.to_tensor([(-0.0 + 1j), (-2.1 + 0j), (2.5 - 0j)])
>>> res = paddle.isreal(x)
>>> print(res)
Tensor(shape=[3], dtype=bool, place=Place(cpu), stop_gradient=True,
[False, True, True])