...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…...(), sigdelset (), and sigismember () or the additional glibc functions described below ( sigisemptyset (), sigandset (), and sigorset ()). The results are undefined if this is n…