Get the inc/dec field from a expr-cast/add-ambig.
(expr-cast/add-ambig->inc/dec x) → inc/dec
This is an ordinary field accessor created by fty::defprod.
Function:
(defun expr-cast/add-ambig->inc/dec$inline (x) (declare (xargs :guard (exprp x))) (declare (xargs :guard (equal (expr-kind x) :cast/add-ambig))) (let ((__function__ 'expr-cast/add-ambig->inc/dec)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (expr-kind x) :cast/add-ambig) x))) (inc/dec-op-list-fix (std::da-nth 1 (cdr x)))) :exec (std::da-nth 1 (cdr x)))))
Theorem:
(defthm inc/dec-op-listp-of-expr-cast/add-ambig->inc/dec (b* ((inc/dec (expr-cast/add-ambig->inc/dec$inline x))) (inc/dec-op-listp inc/dec)) :rule-classes :rewrite)
Theorem:
(defthm expr-cast/add-ambig->inc/dec$inline-of-expr-fix-x (equal (expr-cast/add-ambig->inc/dec$inline (expr-fix x)) (expr-cast/add-ambig->inc/dec$inline x)))
Theorem:
(defthm expr-cast/add-ambig->inc/dec$inline-expr-equiv-congruence-on-x (implies (expr-equiv x x-equiv) (equal (expr-cast/add-ambig->inc/dec$inline x) (expr-cast/add-ambig->inc/dec$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm expr-cast/add-ambig->inc/dec-when-wrong-kind (implies (not (equal (expr-kind x) :cast/add-ambig)) (equal (expr-cast/add-ambig->inc/dec x) (inc/dec-op-list-fix nil))))