def fx_fin
import bend-collections-laws-crypto@1.0.0.0/src/math/f64.bend as F64import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend as W
839def fx_fin(+x: F64, +w: W.U64, +b: Nat) -> F64 & Exp:
840 (round_w(signbit(x), Nat.sub(3000n, b), w), exp_of(Nat.add(dexp(x), b)))