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Std/system

Rune-disabledp

Check if a rune is disabled.

Signature
(rune-disabledp rune state) → yes/no
Arguments: rune — Guard (runep rune (w state)).
Returns: yes/no — Type (booleanp yes/no).

Definitions and Theorems

Function: rune-disabledp

(defun rune-disabledp (rune state)
  (declare (xargs :stobjs (state)))
  (declare (xargs :guard (runep rune (w state))))
  (let ((__function__ 'rune-disabledp))
    (declare (ignorable __function__))
    (if (member-equal rune (disabledp (cadr rune)))
        t
      nil)))

Theorem: booleanp-of-rune-disabledp

(defthm booleanp-of-rune-disabledp
  (b* ((yes/no (rune-disabledp rune state)))
    (booleanp yes/no))
  :rule-classes :rewrite)