127 #define td_event_emptyset(setp) \  argument
131       (setp)->event_bits[__i - 1] = 0;					      \
134 #define td_event_fillset(setp) \  argument
138       (setp)->event_bits[__i - 1] = UINT32_C (0xffffffff);		      \
141 #define td_event_addset(setp, n) \  argument
142   (((setp)->event_bits[__td_eventword (n)]) |= __td_eventmask (n))
143 #define td_event_delset(setp, n) \  argument
144   (((setp)->event_bits[__td_eventword (n)]) &= ~__td_eventmask (n))
145 #define td_eventismember(setp, n) \  argument
146   (__td_eventmask (n) & ((setp)->event_bits[__td_eventword (n)]))
148 # define td_eventisempty(setp) \  argument
149   (!((setp)->event_bits[0]) && !((setp)->event_bits[1]))