Common.half: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as Common
Lines 26-34 of bend-collections-laws-math@1.0.0.0/spec/lib/common.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/spec/lib/common.bend&start_line=26&end_line=34

import Base

# n div 2 and n mod 2, structurally
def half(n: Nat) -> Nat:
  match n:
    case 0n:
      0n
    case 1n:
      0n
    case 2n+q:
      1n+half(q)

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat