Sigmoid Linear Unit, also known as Swish activation.
Examples
act <- mlx_silu()
x <- as_mlx(matrix(c(-2, -1, 0, 1, 2), 5, 1))
mlx_forward(act, x)
#> mlx array [5 x 1]
#> dtype: float32
#> device: gpu
#> values:
#> [,1]
#> [1,] -0.2384058
#> [2,] -0.2689414
#> [3,] 0.0000000
#> [4,] 0.7310586
#> [5,] 1.7615941