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Value

Value-kind

Get the kind (tag) of a value structure.

Signature
(value-kind x) → kind
Arguments: x — Guard (valuep x).

Definitions and Theorems

Function: value-kind$inline

(defun value-kind$inline (x)
  (declare (xargs :guard (valuep x)))
  (let ((__function__ 'value-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :number))
                       :number)
                      ((eq (car x) :character) :character)
                      ((eq (car x) :string) :string)
                      ((eq (car x) :symbol) :symbol)
                      (t :cons))
         :exec (car x))))

Theorem: value-kind-possibilities

(defthm value-kind-possibilities
  (or (equal (value-kind x) :number)
      (equal (value-kind x) :character)
      (equal (value-kind x) :string)
      (equal (value-kind x) :symbol)
      (equal (value-kind x) :cons))
  :rule-classes
  ((:forward-chaining :trigger-terms ((value-kind x)))))