struct timeval

struct timeval
{
__time_t tv_sec;        /* Seconds. */
__suseconds_t tv_usec;  /* Microseconds. */
};

/* Get the current time of day and timezone information,
   putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
   Returns 0 on success, -1 on errors.
   NOTE: This form of timezone information is obsolete.
   Use the functions and variables declared in <time.h> instead. */

extern int gettimeofday (struct timeval *__restrict __tv,
                         __timezone_ptr_t __tz) __THROW __nonnull ((1));