ZSWAP32
strm->adler = state->check = ZSWAP32(hold);
if ((ZSWAP32(hold)) != state->check) {
strm->adler = state->check = ZSWAP32(hold);
if ((ZSWAP32(hold)) != state->check) {
strm->adler = state->check = ZSWAP32(hold);
if ((ZSWAP32(hold)) != state->check) {