def Neg.bits
import bend-collections-laws-math@1.0.0.0/spec/math/u64.bend as U64import Base
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as U
45def Neg.bits(+a: U.U64) -> Type:
46 {bits(U.neg(a)) == Word.inc(64n, Word.not(64n, bits(a))) : Word(64n)}