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paddle / rsqrt
rsqrt¶
-
paddle.rsqrt( x, name=None ) ¶
该OP为rsqrt激活函数。
注：输入x应确保为非 0 值，否则程序会抛异常退出。
其运算公式如下：
\[out = \frac{1}{\sqrt{x}}\]
- 参数:
-
x (Tensor) – 输入是多维Tensor，数据类型可以是float32和float64。
name (str，可选）— 这一层的名称（可选）。如果设置为None，则将自动命名这一层。默认值为None。
返回：Tensor，对输入x进行rsqrt激活函数计算结果，数据shape、类型和输入x的shape、类型一致。
代码示例：
import paddle
x = paddle.to_tensor([0.1, 0.2, 0.3, 0.4])
out = paddle.rsqrt(x)
# [3.16227766 2.23606798 1.82574186 1.58113883]
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