summaryrefslogtreecommitdiff
path: root/src/signal/sigismember.c
blob: ab87d62249de487cdb1c0990ffa26acf60160ade (plain) (blame)
1
2
3
4
5
6
7
8
#include <signal.h>

int sigismember(const sigset_t *set, int sig)
{
	unsigned s = sig-1;
	if (s >= _NSIG-1) return 0;
	return !!(set->__bits[s/8/sizeof *set->__bits] & 1UL<<(s&8*sizeof *set->__bits-1));
}