FD_SET
FD_SET(0, &mask0);
FD_SET(fd, &preset_mask);
FD_SET(s, &dsmask);
FD_SET(fd, fds->fdset);
FD_SET(fd, &readfds);
FD_SET(pfds[i].fd, readfds);
FD_SET(pfds[i].fd, writefds);
FD_SET(pfds[i].fd, exceptfds);
FD_SET(fd, &set);
FD_SET(rt_sock, fdbitsp);
FD_SET(rip_sock, fdbitsp);
FD_SET(ifp->int_rip_sock, fdbitsp);
FD_SET(rdisc_sock, fdbitsp);
FD_SET(soc, &bits);
FD_SET(sock, &ready);
FD_SET(conn->sd, &readfds);
FD_SET(conn->sd, &writefds);
FD_SET(fd, &fdset);
FD_SET(efd, &readfds);
FD_SET(efd, &writefds);
FD_SET(efd, &exceptfds);
FD_SET(efd, &readfds);
FD_SET(efd, &writefds);
FD_SET(efd, &exceptfds);
FD_SET(ctx->efd, &selfds);
FD_SET(ctx->efd, &selfds);
FD_SET(fd, &rset);
FD_SET(fd, &readfds);
FD_SET(fd, &readfds);
FD_SET(fd, &readfds);
FD_SET(fd, &writefds);
FD_SET(fd, &exceptfds);
FD_SET(fd, &readfds);
FD_SET(fd, &writefds);
FD_SET(fd, &exceptfds);
FD_SET(fd, &readfds);
FD_SET(fd[0], &readfd);
FD_SET(fd[0], &readfd);
FD_SET(fd[0], &readfd);
FD_SET(fd[0], &readfd);
FD_SET(pipefd[0], &rfds);
FD_SET(s, &rfds);
FD_SET(s, &rfds);
FD_SET(s1, &rfds);
FD_SET(s2, &rfds);
FD_SET(fd[i].fd, &rfds);
FD_SET(fd[i].fd, &wfds);
FD_SET(outfd, &readfds);
FD_SET(metafd, &readfds);
FD_SET(fd, &fds);
FD_SET(qpsock, &fds);
FD_SET(newsock, &fds);
FD_SET(s_rcv, &exceptfds);
FD_SET(s_rcv, &readfds);
FD_SET(s_snd, &writefds);
FD_SET(s_rcv, &readfds);
FD_SET(s_rcv, &exceptfds);
FD_SET(s_snd, &writefds);
FD_SET(s_snd, &writefds);
FD_SET(ii->fd, &fds);
FD_SET(igmp_socket, &readers);
FD_SET(ihandlers[i].fd, &readers);
FD_SET(ii->ii_fd, &fds);
FD_SET(fd, &r->refset);
FD_SET(fd, &r->refset);
FD_SET(fd, &srv->fdset);
FD_SET(fd, &srv->fdset);
FD_SET(cfd, &srv->fdset);
FD_SET(master, &active_fd_set);
FD_SET(STDIN_FILENO, &active_fd_set);
FD_SET(STDIN_FILENO, &r);
FD_SET(devfd, &r);
FD_SET(sock, fdsp);
FD_SET(rpcsock, &fdsr);
FD_SET(pingsock, &fdsr);