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#define _GNU_SOURCE
#include <signal.h>
#include <errno.h>
#define SST_SIZE (sizeof(sigset_t) / sizeof(long))
int sigandset(sigset_t *dest, sigset_t *left, sigset_t *right)
{
if(!dest || !left || !right) {
errno = EINVAL;
return -1;
}
unsigned long i = 0, *d = (void*) dest, *l = (void*) left, *r = (void*) right;
for(; i < SST_SIZE; i++) d[i] = l[i] & r[i];
return 0;
}
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