Get the history field from a ipasir$a.
(ipasir$a->history x) → fty::x.name
This is an ordinary field accessor created by fty::defprod.
Function:
(defun ipasir$a->history$inline (x) (declare (xargs :guard (ipasir$a-p x))) (declare (xargs :guard t)) (let ((__function__ 'ipasir$a->history)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (cdr (std::da-nth 7 x))) :exec (cdr (std::da-nth 7 x)))))
Theorem:
(defthm ipasir$a->history$inline-of-ipasir$a-fix-x (equal (ipasir$a->history$inline (ipasir$a-fix x)) (ipasir$a->history$inline x)))
Theorem:
(defthm ipasir$a->history$inline-ipasir$a-equiv-congruence-on-x (implies (ipasir$a-equiv x x-equiv) (equal (ipasir$a->history$inline x) (ipasir$a->history$inline x-equiv))) :rule-classes :congruence)