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String-literals

Unicode-stringlit-char-fix

Fixer for unicode-stringlit-char.

Signature
(unicode-stringlit-char-fix x) → fixed-x
Arguments: x — Guard (unicode-stringlit-char-p x).
Returns: fixed-x — Type (unicode-stringlit-char-p fixed-x).

Definitions and Theorems

Function: unicode-stringlit-char-fix

(defun unicode-stringlit-char-fix (x)
  (declare (xargs :guard (unicode-stringlit-char-p x)))
  (mbe :logic
       (if (unicode-stringlit-char-p x)
           x
         (make-unicode-input-char :unicode 0
                                  :umarker 0))
       :exec x))

Theorem: unicode-stringlit-char-p-of-unicode-stringlit-char-fix

(defthm unicode-stringlit-char-p-of-unicode-stringlit-char-fix
  (b* ((fixed-x (unicode-stringlit-char-fix x)))
    (unicode-stringlit-char-p fixed-x))
  :rule-classes :rewrite)

Theorem: unicode-stringlit-char-fix-when-unicode-stringlit-char-p

(defthm unicode-stringlit-char-fix-when-unicode-stringlit-char-p
  (implies (unicode-stringlit-char-p x)
           (equal (unicode-stringlit-char-fix x)
                  x)))