Natfuel.bends: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/math/typed/natfuel.bend as Natfuel
Lines 129-138 of bend-collections-laws-math@1.0.0.0/proofs/math/typed/natfuel.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/typed/natfuel.bend&start_line=129&end_line=138

import Base

def bends(f: Nat, +n: Nat) -> Bool:
  match f n:
    case 0n 0n:
      True{}
    case 0n 1n+np:
      False{}
    case 1n+g 0n:
      True{}
    case 1n+g 1n+ +np:
      bends(g, Nat.div(1n+np, 2n))

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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