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SIGSETOPS !!!SIGSETOPS NAME SYNOPSIS DESCRIPTION RETURN VALUE ERRORS CONFORMING TO SEE ALSO ---- !!NAME sigemptyset, sigfillset, sigaddset, sigdelset, sigismember - POSIX signal set operations. !!SYNOPSIS __#include __ __int sigemptyset(sigset_t *__''set''__);__ __int sigfillset(sigset_t *__''set''__);__ __int sigaddset(sigset_t *__''set''__, int__ ''signum''__);__ __int sigdelset(sigset_t *__''set''__, int__ ''signum''__);__ __int sigismember(const sigset_t *__''set''__, int__ ''signum''__);__ !!DESCRIPTION The sigsetops(3) functions allow the manipulation of POSIX signal sets. __sigemptyset__ initializes the signal set given by ''set'' to empty, with all signals excluded from the set. __sigfillset__ initializes ''set'' to full, including all signals. __sigaddset__ and __sigdelset__ add and delete respectively signal ''signum'' from ''set''. __sigismember__ tests whether ''signum'' is a member of ''set.'' !!RETURN VALUE __sigemptyset__, __sigfullset__, __sigaddset__ and __sigdelset__ return 0 on success and -1 on error. __sigismember__ returns 1 if ''signum'' is a member of ''set'', 0 if ''signum'' is not a member, and -1 on error. !!ERRORS __EINVAL__ ''sig'' is not a valid signal. !!CONFORMING TO POSIX !!SEE ALSO sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2) ----
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