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l1_loss_backward

teeny_kernels::nn::loss::elementwise

Function l1_loss_backward 

Source 
pub fn l1_loss_backward<T: Triton, const BLOCK_SIZE: i32>(
    dy_ptr: T::Pointer<f32>,
    x_ptr: T::Pointer<f32>,
    y_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

Element-wise L1 backward: dx = dy * sign(x - y).

sign(0) = 0 by convention (no gradient at the kink).