DEF_WBITS
return inflateInit2(z, DEF_WBITS);
#ifndef DEF_WBITS
#ifndef DEF_WBITS
return (inflateInit2_(z, DEF_WBITS, version, stream_size));
if ((err = inflateInit2(&zs, DEF_WBITS | 0x20)) != Z_OK)