def mul_z
import bend-collections@1.0.0.0/src/math/f64.bend as F64import Base
import bend-collections@1.0.0.0/src/math/u64.bend as W
333def mul_z(+s: Bool, +ea: Nat, +fa: W.U64, +eb: Nat, +fb: W.U64, z: Bool) -> F64:
334 match z:
335 case True{}:
336 zero(s)
337 case False{}:
338 mul_n(s, norm_e(ea, fa), norm_f(ea, fa), norm_e(eb, fb), norm_f(eb, fb))