def drop_b2
import bendtorch@1.3.0.0/main.bend as Bendtorchimport Base
import bend-ml-tensor-array@0.1.18.0/main.bend as TA
1267def drop_b2(-n: Nat, -c: Nat, d: DropP, g: DropP, r: TA.MPair<n, c>) -> Bwd<DropP, TA.Mat<n, c>>:
1268 match r:
1269 case TA.MPair{dx, k}:
1270 Bwd{d, dx, g}