Get the declor field from a fun-declon.
(fun-declon->declor x) → declor
This is an ordinary field accessor created by fty::defprod.
Function:
(defun fun-declon->declor$inline (x) (declare (xargs :guard (fun-declonp x))) (declare (xargs :guard t)) (let ((__function__ 'fun-declon->declor)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (fun-declor-fix (cdr (std::da-nth 1 (cdr x))))) :exec (cdr (std::da-nth 1 (cdr x))))))
Theorem:
(defthm fun-declorp-of-fun-declon->declor (b* ((declor (fun-declon->declor$inline x))) (fun-declorp declor)) :rule-classes :rewrite)
Theorem:
(defthm fun-declon->declor$inline-of-fun-declon-fix-x (equal (fun-declon->declor$inline (fun-declon-fix x)) (fun-declon->declor$inline x)))
Theorem:
(defthm fun-declon->declor$inline-fun-declon-equiv-congruence-on-x (implies (fun-declon-equiv x x-equiv) (equal (fun-declon->declor$inline x) (fun-declon->declor$inline x-equiv))) :rule-classes :congruence)