def u32_iz

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/curve25519/canon.bend:158

import Base
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/u32.bend as U

158def u32_iz(+a: U32) -> {U32.is_eq(a, 0) == Nat.is_eq(v(a), 0n) : Bool}:
159  Equal.cong(Cmp, Bool, c => Cmp.is_eq(c), U32.cmp(a, 0), Nat.cmp(v(a), 0n), U.u32_cmp(a, 0))