M_BITS
#define S_FACTOR (2 * M_BITS)
static const int nbits = 8192 << M_BITS;
ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS;
errrate = (((ocount + icount) / 100) << M_BITS)
ifp->if_get_counter(ifp, IFCOUNTER_IERRORS)) / 100) << M_BITS)
((1 << S_FACTOR) / ((1 << M_BITS) - errrate));