Get the arg field from a alignspec-alignas-expr.
(alignspec-alignas-expr->arg x) → arg
This is an ordinary field accessor created by fty::defprod.
Function:
(defun alignspec-alignas-expr->arg$inline (x) (declare (xargs :guard (alignspecp x))) (declare (xargs :guard (equal (alignspec-kind x) :alignas-expr))) (let ((__function__ 'alignspec-alignas-expr->arg)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (alignspec-kind x) :alignas-expr) x))) (const-expr-fix (std::da-nth 0 (cdr x)))) :exec (std::da-nth 0 (cdr x)))))
Theorem:
(defthm const-exprp-of-alignspec-alignas-expr->arg (b* ((arg (alignspec-alignas-expr->arg$inline x))) (const-exprp arg)) :rule-classes :rewrite)
Theorem:
(defthm alignspec-alignas-expr->arg$inline-of-alignspec-fix-x (equal (alignspec-alignas-expr->arg$inline (alignspec-fix x)) (alignspec-alignas-expr->arg$inline x)))
Theorem:
(defthm alignspec-alignas-expr->arg$inline-alignspec-equiv-congruence-on-x (implies (alignspec-equiv x x-equiv) (equal (alignspec-alignas-expr->arg$inline x) (alignspec-alignas-expr->arg$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm alignspec-alignas-expr->arg-when-wrong-kind (implies (not (equal (alignspec-kind x) :alignas-expr)) (equal (alignspec-alignas-expr->arg x) (const-expr-fix nil))))