1#define _GNU_SOURCE
2#include <signal.h>
3
4#define SST_SIZE (_NSIG / 8 / sizeof(long))
5
6int sigorset(sigset_t* dest, const sigset_t* left, const sigset_t* right) {
7    unsigned long i = 0, *d = (void *)dest, *l = (void *)left, *r = (void *)right;
8    for (; i < SST_SIZE; i++)
9        d[i] = l[i] | r[i];
10    return 0;
11}
12