The typedef timeb_t refers to the following structure defined in
    the <timeb.h> header file:

    typedef struct timeb
       {
          time_t         time;
          unsigned short millitm;
          short          timezone;
          short          dstflag;
       };

    The member time gives the time in seconds.

    The member millitm gives the fractional time in milliseconds.

    After a call to ftime, the timezone and dstflag members of the
    timeb structure have the values of the global variables timezone
    and dstflag, respectively. See the description of the tzset
    function for timezone and dstflag global variables.