Function libeyelink_sys::eyelink_tracker_double_usec

pub unsafe extern "C" fn eyelink_tracker_double_usec() -> f64

@ingroup access_time_tracker Returns the current tracker time (in micro seconds) since the tracker application started.

@return Each of these functions returns the current tracker time (in microseconds) since tracker initialization.

\b Example:

\code
#include 
#include 

int i;
ALLF_DATA evt;

i = eyelink_get_next_data(NULL);   // Checks for new data item
switch(i)
{
case SAMPLE_TYPE:
{
eyelink_get_float_data(&evt);
if(eyelink_tracker_double_usec()/1000000 >(evt.time +2) )
printf("Oops it took longer than 2 milliseconds for the data to get
here.\n");
}
break;
}
\endcode

\sa \c eyelink_tracker_msec(), \c current_time(), \c eyelink_msec_offset() and \c eyelink_double_usec_offset()