sigpending - examine pending signals

Syntax	#include <signal.h> int sigpending(sigset_t *set);
Description	sigpending() stores the set of signals that are blocked from delivery and pending to the calling process, in the object pointed to by set.
Return val.	0 -1	if successful. if an error occurs. errno is set to indicate the error.
Errors	sigpending() will fail if: Extension EFAULT         set is not a valid pointer. (End)
See also	sigaddset(), sigdelset(), sigemptyset(), sigfillset(), sigismember(), sigprocmask(), signal.h.