W
#define W(offset) MAX0(ccs.offset - ocs.offset)
#define W 0400 /* Illegal when read only bit */
#define W(n) w[n]
#define W(n) w_ ## n
#define W(f) ((f) -> w)
W = __LONG_MAX__ + 1UL, // doesn't fit in 'long'
#define W 3
#define W 3
#define W 3
#define W 1