MWORD
#define BIS(i, w) (MWORD(w, i) |= MBIT(i))
#define BIC(i, w) (MWORD(w, i) &= ~MBIT(i))
#define BIT(i, w) (MWORD(w, i) & MBIT(i))
#define BIS(i, w) (MWORD((w), (i)) |= MBIT(i))
#define BIC(i, w) (MWORD((w), (i)) &= ~MBIT(i))
#define BIT(i, w) (MWORD((w), (i)) & MBIT(i))