Get the definer field from a function-definition.
(function-definition->definer x) → definer
This is an ordinary field accessor created by fty::defprod.
Function:
(defun function-definition->definer$inline (x) (declare (xargs :guard (function-definitionp x))) (declare (xargs :guard t)) (let ((__function__ 'function-definition->definer)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (function-definer-fix (cdr (std::da-nth 3 x)))) :exec (cdr (std::da-nth 3 x)))))
Theorem:
(defthm function-definerp-of-function-definition->definer (b* ((definer (function-definition->definer$inline x))) (function-definerp definer)) :rule-classes :rewrite)
Theorem:
(defthm function-definition->definer$inline-of-function-definition-fix-x (equal (function-definition->definer$inline (function-definition-fix x)) (function-definition->definer$inline x)))
Theorem:
(defthm function-definition->definer$inline-function-definition-equiv-congruence-on-x (implies (function-definition-equiv x x-equiv) (equal (function-definition->definer$inline x) (function-definition->definer$inline x-equiv))) :rule-classes :congruence)