def cv

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/f64round.bend:225

import Base
import bend-collections-laws-math@1.0.0.0/spec/math/f64.bend as SF
import bend-collections-laws-math@1.0.0.0/spec/math/w64.bend as SW
import bend-collections-laws-math@1.0.0.0/src/math/w64.bend as X
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as WU

225def cv(+r: WU.U64, +b: Bool) -> {SW.value(X.clear0(r, b)) == SF.pick(Nat, b, Nat.sub(SW.value(r), Nat.mod(SW.value(r), 2n)), SW.value(r)) : Nat}:
226  match r:
227    case WU.U64{+l, +h}:
228      cvb(l, h, b)