Get the function field from a atj-test.
This is an ordinary field accessor created by fty::defprod.
Function:
(defun atj-test->function$inline (x) (declare (xargs :guard (atj-testp x))) (declare (xargs :guard t)) (let ((__function__ 'atj-test->function)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (acl2::symbol-fix (cdr (std::da-nth 1 x)))) :exec (cdr (std::da-nth 1 x)))))
Theorem:
(defthm symbolp-of-atj-test->function (b* ((function (atj-test->function$inline x))) (symbolp function)) :rule-classes :rewrite)
Theorem:
(defthm atj-test->function$inline-of-atj-test-fix-x (equal (atj-test->function$inline (atj-test-fix x)) (atj-test->function$inline x)))
Theorem:
(defthm atj-test->function$inline-atj-test-equiv-congruence-on-x (implies (atj-test-equiv x x-equiv) (equal (atj-test->function$inline x) (atj-test->function$inline x-equiv))) :rule-classes :congruence)