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• Combinational-type

Ctype-fix

Fixing function for combinational-type keywords.

Signature

(ctype-fix x) → ctype

Returns

ctype — Type (ctypep ctype).

Definitions and Theorems

Function: ctype-fix

(defun ctype-fix (x)
  (declare (xargs :guard t))
  (let ((__function__ 'ctype-fix))
    (declare (ignorable __function__))
    (if (ctypep x) x (const-ctype))))

Theorem: ctypep-of-ctype-fix

(defthm ctypep-of-ctype-fix
  (b* ((ctype (ctype-fix x)))
    (ctypep ctype))
  :rule-classes :rewrite)

Theorem: ctype-fix-when-ctypep

(defthm ctype-fix-when-ctypep
  (implies (ctypep x)
           (equal (ctype-fix x) x)))