rsqrt

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

Rsqrt Activation Operator.

Please make sure input is legal in case of numeric errors.

\[out = \frac{1}{\sqrt{x}}\]

Parameters

• x (Tensor) – Input of Rsqrt operator, an N-D Tensor, with data type float32, float64, float16, bfloat16, uint8, int8, int16, int32, int64. Alias: input.

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

• out (Tensor, optional) – The output tensor. If set, the result will be stored in this tensor. Default is None.

Returns

Tensor. Output of Rsqrt operator, a Tensor with shape same as input

(integer types are autocasted into float32).

Examples

>>> import paddle

>>> x = paddle.to_tensor([0.1, 0.2, 0.3, 0.4])
>>> out = paddle.rsqrt(x)
>>> print(out)
Tensor(shape=[4], dtype=float32, place=Place(cpu), stop_gradient=True,
[3.16227770, 2.23606801, 1.82574177, 1.58113885])