WIN_CNT
i = ((wep->weCnt & WIN_CNT) - 1) * WIN_CHARS;
if ((wep->weCnt & WIN_CNT) > howmany(WIN_MAXLEN, WIN_CHARS)
|| !(wep->weCnt & WIN_CNT))
x &= WIN_CNT;
lfn += 13 * ((xde->weCnt & WIN_CNT) - 1);