SIGADDSET
SIGADDSET(set, SIGCANCEL);
SIGADDSET(actp->sa_mask, sig);
SIGADDSET(ucp->uc_sigmask, SIGCANCEL);
SIGADDSET(act.sa_mask, SIGCANCEL);
SIGADDSET(newset, SIGCANCEL);
SIGADDSET(*bss, b);
#define sigaddset(set, sig) SIGADDSET(set, sig)
SIGADDSET(unb, SIGHUP);
SIGADDSET(p->p_siglist, SIGSTOP);
SIGADDSET(ps->ps_sigignore, i);
SIGADDSET(ps->ps_sigignore, sig);
SIGADDSET(mask, sig);
SIGADDSET(sigpending, SIGSTOP);
SIGADDSET(sq->sq_kill, signo);
SIGADDSET(sq->sq_kill, signo);
SIGADDSET(sq->sq_ptrace, signo);
SIGADDSET(sq->sq_kill, signo);
SIGADDSET(sq->sq_signals, signo);
SIGADDSET(set, signo);
SIGADDSET(set, signo);
SIGADDSET(set, signo);
SIGADDSET(set, SIGSTOP);
SIGADDSET(set, SIGTSTP);
SIGADDSET(set, SIGTTIN);
SIGADDSET(set, SIGTTOU);
SIGADDSET(ps->ps_siginfo, sig);
SIGADDSET(ps->ps_sigintr, sig);
SIGADDSET(ps->ps_sigonstack, sig);
SIGADDSET(ps->ps_sigreset, sig);
SIGADDSET(ps->ps_signodefer, sig);
SIGADDSET(ps->ps_sigignore, sig);
SIGADDSET(ps->ps_sigcatch, sig);
SIGADDSET(ps->ps_freebsd4, sig);
SIGADDSET(ps->ps_osigset, sig);