Function circular_pad1d_backward 

pub fn circular_pad1d_backward<T: Triton, D: Num, const PAD_LEFT: i32, const PAD_RIGHT: i32, const BLOCK_OL: i32>(
    dy_ptr: T::Pointer<D>,
    dx_ptr: T::Pointer<D>,
    _B: i32,
    C: i32,
    L: i32,
    OL: i32,
)
where
    T::I32Tensor: Tensor<i32, 1> + Comparison<i32, BoolTensor = T::BoolTensor>,
    T::BoolTensor: BitAnd<Output = T::BoolTensor> + BitOr<Output = T::BoolTensor>,
    T::Pointer<D>: AddOffsets<i32, 1, T::I32Tensor, Output = T::Tensor<T::Pointer<D>>>,

1-D circular padding backward pass.

Multiple output positions may wrap to the same input position, so atomic_add is used. dx must be zero-initialised before launch.