def lin_b3
import bendtorch@1.3.0.0/main.bend as Bendtorchimport Base
import bend-ml-tensor-array@0.1.18.0/main.bend as TA
625def lin_b3(+n: Nat, -i: Nat, +o: Nat, w: TA.Mat<o, i>, b: TA.Mat<1n, o>, dx: TA.Mat<n, i>, gb: TA.Mat<1n, o>, r: TA.MMulTN<o, n, i>) -> Bwd<Lin<i, o>, TA.Mat<n, i>>:
626 match r:
627 case TA.MMulTN{dy, x, gw}:
628 lin_b4(n, i, o, w, b, dx, gw, TA.Mat.col_sums_acc(n, o, dy, gb))