Determine the current bfr mode we are using.
GL users should generally not use this.
(bfr-mode) is an attachable function which is typically attached to
either
Definition:
(encapsulate ((bfr-mode nil t)) (with-output :off summary (logic)) (with-output :summary-off (:other-than acl2::redundant) (local (defun bfr-mode nil (declare (ignorable)) nil))))
Function:
(defun bfr-aig nil (declare (xargs :guard t)) t)
Function:
(defun bfr-bdd nil (declare (xargs :guard t)) nil)