gzwrite
len = gzwrite(out, (char *)buf, (unsigned)buf_len);
if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err));
ZEXTERN int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len);
return gzwrite(cookie, __UNCONST(data), size);
kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size);
kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size);
kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size);
ZEXTERN int ZEXPORT gzwrite(gzFile, const voidp, unsigned);