def gz.isize
import bend-kit-zlib@0.5.1.0/zlib.bend as Zlibimport Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes
628def gz.isize(+ok: Bool, +n: U32, +next: U32, out: Bytes.Bytes, r: Bytes.Bytes & Maybe<&2, U32>) -> Maybe<&1, Member>:
629 (src, z) = r
630 gz.keep(Bool.and(ok, holds(z, n)), out, src, next)