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─────Run-Time Library───────────────────────────────────────────────────────
 
  Constant:  _TIME_GETCLOCK, _TIME_SETCLOCK
 
  Include:   <bios.h>
 
  Context:   _bios_timeofday
 
  Summary:   The <service> argument can be either of the following
             manifest constants:
 
     Constant           Meaning
 
     _TIME_GETCLOCK     Copies the current value of the clock count to
                        the location pointed to by <timeval>. If
                        midnight has not passed since the last time
                        the system clock was read or set, the function
                        returns 0; otherwise, it returns 1.
 
     _TIME_SETCLOCK     Sets the current value of the system clock to
                        the value in the location pointed to by
                        <timeval>. There is no return value.
                                    -♦-