tensorplay.autograd.forward_ad.unpack_dual

tensorplay.autograd.forward_ad.unpack_dual(tensor: Tensor, *, level: int | None = None) → UnpackedDualTensor[source]

Unpacks a dual tensor into its primal value and forward gradient.

Returns (primal, tangent) where primal is a view of tensor’s primal and tangent is tensor’s tangent (None when tensor carries no tangent at level).