def rpw

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/f64round.bend:619

import Base
import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as C
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

619def rpw(+w: WU.U64, +hS: {C.fits(63n, SW.value(w)) == True{} : Bool}) -> {SW.value(X.clear0(X.shr(X.add(w, WU.U64{512, 0}), 10n), U32.is_eq(U32.and(X.lo(w), 1023), 512))) == SF.rne(SW.value(w), 10n) : Nat}:
620  match w:
621    case WU.U64{+l, +h}:
622      rpv(l, h, hS)