def internal_div_go_small
import bend-mathlib@0.8.1.0/nat.bend as Natimport Base
800def internal_div_go_small(n: Nat, +k: Nat, +d: Nat, r: Nat) -> {d == Pair.fst(Nat, Nat, Nat.divmod.go(n, Nat.add(n, k), d, r)) : Nat}:
801 match n:
802 case 0n:
803 {==}
804 case 1n+np:
805 internal_div_go_small(np, k, d, 1n+r)