int yaz_poll(struct yaz_poll_fd *fds, int num_fds, int sec, int nsec);
#define yaz_poll_add(var,value) var = (enum yaz_poll_mask ) ((int) var | value)
int yaz_poll(struct yaz_poll_fd *fds, int num_fds, int sec, int nsec);
#define yaz_poll_add(var,value) var = (enum yaz_poll_mask ) ((int) var | value)