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swish_backward

teeny_kernels::nn::activation::extra

Function swish_backward 

Source 
pub fn swish_backward<T: Triton, const BLOCK_SIZE: i32>(
    dy_ptr: T::Pointer<f32>,
    x_ptr: T::Pointer<f32>,
    dx_ptr: T::Pointer<f32>,
    n_elements: i32,
)
where
    T::I32Tensor: Tensor<i32, 1> + Comparison<i32, BoolTensor = T::BoolTensor>,
    T::Pointer<f32>: AddOffsets<i32, 1, T::I32Tensor, Output = T::Tensor<T::Pointer<f32>>>,
Expand description

Backward: dx = (sigmoid(x) + x * sigmoid(x) * (1 - sigmoid(x))) * dy = (sig + x * sig * (1 - sig)) * dy