
#define ITIMER_REAL	0
#define ITIMER_VIRTUAL	1
#define ITIMER_PROF	2

struct timezone
{
  int tz_minuteswest;
  int tz_dsttime;
}
 ;

typedef int __itimer_which_t;

struct timespec
{
  time_t tv_sec;
  long tv_nsec;
}
 ;

struct timeval
{
  time_t tv_sec;
  suseconds_t tv_usec;
}
 ;

struct itimerval
{
  struct timeval it_interval;
  struct timeval it_value;
}
 ;
