sigaddset
Synopsis
#include <signal.h>
int sigaddset(sigset_t *set, int signo);
Status
Partially implemented
Conformance
IEEE Std 1003.1-2017
Description
The sigaddset() function adds the individual signal specified by the signo to the signal set pointed to by
set.
Applications shall call either sigemptyset() or sigfillset() at least once for each object of type sigset_t
prior to any other use of that object. If such an object is not initialized in this way, but is nonetheless supplied as
an argument to any of `pthread_sigmask(),sigaction(),sigaddset(),sigdelset(),sigismember(),sigpending(),sigprocmask(),sigsuspend(),sigtimedwait(),sigwait(), orsigwaitinfo()`, the results are
undefined.
Return value
Upon successful completion, sigaddset() shall return 0; otherwise, it shall return -1 and set errno to indicate
the error.
Errors
The sigaddset() function may fail if:
EINVAL- The value of the signo argument is an invalid or unsupported signal number.
Tests
Untested
Known bugs
None