readef

	readef(event_flag.i2.r, status.i2.r)

	This routine will read a single event flag specified by 'event_flag'.

	event_flag	event flag to read
	[status]	returned status value
			(0 -> event flag is clear,
			 2 -> event flag is set,
			 -1 -> error reading event flag)

	This function requires the following include files:

	clib_h

	Related functions:

	setef, clref, waitfr