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Primitive-functions

Eval-char-code

Evaluation semantics of char-code.

Signature
(eval-char-code x) → result
Arguments: x — Guard (valuep x).
Returns: result — Type (valuep result).

Definitions and Theorems

Function: eval-char-code

(defun eval-char-code (x)
  (declare (xargs :guard (valuep x)))
  (let ((__function__ 'eval-char-code))
    (declare (ignorable __function__))
    (value-number (if (value-case x :character)
                      (char-code (value-character->get x))
                    0))))

Theorem: valuep-of-eval-char-code

(defthm valuep-of-eval-char-code
  (b* ((result (eval-char-code x)))
    (valuep result))
  :rule-classes :rewrite)

Theorem: eval-char-code-of-value-fix-x

(defthm eval-char-code-of-value-fix-x
  (equal (eval-char-code (value-fix x))
         (eval-char-code x)))

Theorem: eval-char-code-value-equiv-congruence-on-x

(defthm eval-char-code-value-equiv-congruence-on-x
  (implies (value-equiv x x-equiv)
           (equal (eval-char-code x)
                  (eval-char-code x-equiv)))
  :rule-classes :congruence)