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