def rb
import bend-collections-laws-crypto@1.0.0.0/spec/math/f64.bend as F64import Base
import bend-collections-laws-crypto@1.0.0.0/spec/lib/common.bend as C
import bend-collections-laws-crypto@1.0.0.0/src/math/f64.bend as F
508def rb(+x: F.F64, +y: F.F64) -> Nat:
509 C.shift(Nat.sub(xexp(y), rsc(x, y)), mant(y))