musl/src/signal/sigaddset.c

14 lines
255 B
C
Raw Normal View History

2011-02-12 00:22:29 -05:00
#include <signal.h>
#include <errno.h>
int sigaddset(sigset_t *set, int sig)
{
unsigned s = sig-1;
if (s >= 8*sizeof(sigset_t)) {
errno = EINVAL;
return -1;
}
set->__bits[s/8/sizeof *set->__bits] |= 1UL<<(s&8*sizeof *set->__bits-1);
return 0;
}