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#define _GNU_SOURCE
#include <unistd.h>
#include <sys/time.h>
unsigned ualarm(unsigned value, unsigned interval)
{
struct itimerval it = {
.it_interval.tv_usec = interval,
.it_value.tv_usec = value
}, it_old;
setitimer(ITIMER_REAL, &it, &it_old);
return it_old.it_value.tv_sec*1000000 + it_old.it_value.tv_usec;
}
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