U32.Word.add_sub: law of bend-lawful-stdlib@0.1.0.0
Import: import bend-lawful-stdlib@0.1.0.0/src/u32.bend as U32
Lines 260-266 of bend-lawful-stdlib@0.1.0.0/src/u32.bend: https://jend.leeeet.dev/read.txt?path=bend-lawful-stdlib@0.1.0.0/src/u32.bend&start_line=260&end_line=266

import Base

# (a - b) + b, with carry not(c), is a
law Word.add_sub:
  for +n: Nat
  for a: Word(n)
  for +b: Word(n)
  for c: Bool
  {a == Word.adc(n, Word.adc(n, a, b, True{}, c), b, False{}, Bool.not(c)) : Word(n)}

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.Con
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.Nil
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.adc
  https://jend.leeeet.dev/definition.txt?path=bend-lawful-stdlib@0.1.0.0/src/u32.bend&name=Word.add_sub.arm