Get the fty::val field from a dec-expo-option-some.
(dec-expo-option-some->val x) → fty::val
This is an ordinary field accessor created by fty::defprod.
Function:
(defun dec-expo-option-some->val$inline (x) (declare (xargs :guard (dec-expo-optionp x))) (declare (xargs :guard x)) (let ((__function__ 'dec-expo-option-some->val)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and x x))) (dec-expo-fix x)) :exec x)))
Theorem:
(defthm dec-expop-of-dec-expo-option-some->val (b* ((fty::val (dec-expo-option-some->val$inline x))) (dec-expop fty::val)) :rule-classes :rewrite)
Theorem:
(defthm dec-expo-option-some->val$inline-of-dec-expo-option-fix-x (equal (dec-expo-option-some->val$inline (dec-expo-option-fix x)) (dec-expo-option-some->val$inline x)))
Theorem:
(defthm dec-expo-option-some->val$inline-dec-expo-option-equiv-congruence-on-x (implies (dec-expo-option-equiv x x-equiv) (equal (dec-expo-option-some->val$inline x) (dec-expo-option-some->val$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm dec-expo-option-some->val-when-wrong-kind (implies (not x) (equal (dec-expo-option-some->val x) (dec-expo-fix nil))))