def run
import bend-parallel@0.1.0.0/scan.bend as Scanimport Base
217def run(+inc: Bool, +b: Nat, r: Array<U32> & U32) -> Array<U32> & U32:
218 (a, +n) = r
219 +lg = U32.log2(n)
220 +d = Nat.min(b, lg)
221 +e = Nat.sub(lg, d)
222 run.pick(U32.is_lt(U32.from_nat(d), 12), inc, d, e, run.pre(d, e, a))