Get the design field from a desiniter.
(desiniter->design x) → design
This is an ordinary field accessor created by fty::defprod.
Function:
(defun desiniter->design$inline (x) (declare (xargs :guard (desiniterp x))) (declare (xargs :guard t)) (let ((__function__ 'desiniter->design)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (designor-list-fix (cdr (std::da-nth 0 x)))) :exec (cdr (std::da-nth 0 x)))))
Theorem:
(defthm designor-listp-of-desiniter->design (b* ((design (desiniter->design$inline x))) (designor-listp design)) :rule-classes :rewrite)
Theorem:
(defthm desiniter->design$inline-of-desiniter-fix-x (equal (desiniter->design$inline (desiniter-fix x)) (desiniter->design$inline x)))
Theorem:
(defthm desiniter->design$inline-desiniter-equiv-congruence-on-x (implies (desiniter-equiv x x-equiv) (equal (desiniter->design$inline x) (desiniter->design$inline x-equiv))) :rule-classes :congruence)