Get the package field from a class-type-package.
(class-type-package->package x) → package
This is an ordinary field accessor created by fty::defprod.
Function:
(defun class-type-package->package$inline (x) (declare (xargs :guard (class-typep x))) (declare (xargs :guard (equal (class-type-kind x) :package))) (let ((__function__ 'class-type-package->package)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (class-type-kind x) :package) x))) (package-name-fix (std::da-nth 0 (cdr x)))) :exec (std::da-nth 0 (cdr x)))))
Theorem:
(defthm package-namep-of-class-type-package->package (b* ((package (class-type-package->package$inline x))) (package-namep package)) :rule-classes :rewrite)
Theorem:
(defthm class-type-package->package$inline-of-class-type-fix-x (equal (class-type-package->package$inline (class-type-fix x)) (class-type-package->package$inline x)))
Theorem:
(defthm class-type-package->package$inline-class-type-equiv-congruence-on-x (implies (class-type-equiv x x-equiv) (equal (class-type-package->package$inline x) (class-type-package->package$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm class-type-package->package-when-wrong-kind (implies (not (equal (class-type-kind x) :package)) (equal (class-type-package->package x) (package-name-fix nil))))