erf¶

paddle. erf ( x, name=None ) [source]

The error function. For more details, see Error function.

Equation:

\[out = \frac{2}{\sqrt{\pi}} \int_{0}^{x}e^{- \eta^{2}}d\eta\]

Parameters

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

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

Returns

The output of Erf, dtype: float32 or float64, the same as the input, shape: the same as the input.

Return type

Tensor

Examples

>>> import paddle

>>> x = paddle.to_tensor([-0.4, -0.2, 0.1, 0.3])
>>> out = paddle.erf(x)
>>> print(out)
Tensor(shape=[4], dtype=float32, place=Place(cpu), stop_gradient=True,
[-0.42839241, -0.22270259,  0.11246292,  0.32862678])