reply_in.i4.v =	fm_check_reply(event.i4.r [,status.i4.r]

	reply_in.i4.v =	fm_check_reply_c(event.i4.v [,status.i4.r]

	This routine will check for the completion of an asynchronous
	file access.

	event		event flag for this reply
	[status]	returned ACNET status of access (default is NULL)
	[ext_status]	returned extended status from VMS/RMS (default is NULL)
	[num_returned]	number of bytes, number of records, or vun returned
			for read, read multiple and open respectively
			(default is NULL)

	This function returns status values as follows:

	TRUE			reply is in
	FALSE			reply not available yet

	This function requires the following include files:

	cnsparam_h, cbslib_h

	Related functions:

	fm_open(_c), fm_read(_c), fm_read_multiple(_c)

	C/C++ usage:

	int	reply_in;
	int	event;
	int	status;
	int	ext_status;
	int	num_returned;

	reply_in = fm_check_reply_c(event,&status,&ext_status,&num_returned);