Squareplus activation function.
Computes the element-wise function:
\[\mathrm{squareplus}(x) = \frac{x + \sqrt{x^2 + b}}{2}\]
- Parameters:
x (Array | ndarray | bool | number | bool | int | float | complex | Quantity) – Input array.
b (Array | ndarray | bool | number | bool | int | float | complex | Quantity) – Smoothness parameter. Default is 4.
- Returns:
An array with the same shape as the input.
- Return type:
Array | Quantity
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