Natural.bit_length_go: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend as Natural
Lines 157-164 of bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend&start_line=157&end_line=164

import Base

def bit_length_go(fuel: Nat, +n: Nat, +k: Nat) -> Nat:
  match fuel n:
    case 0n _:
      k
    case 1n+f 0n:
      k
    case 1n+f 1n+ +np:
      bit_length_go(f, Nat.div(1n+np, 2n), 1n+k)

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.div