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Code-segment-descriptor-attributesbits

Code-segment-descriptor-attributesbits-p

Recognizer for code-segment-descriptor-attributesbits bit structures.

Signature
(code-segment-descriptor-attributesbits-p x) → *

Definitions and Theorems

Function: code-segment-descriptor-attributesbits-p

(defun code-segment-descriptor-attributesbits-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'code-segment-descriptor-attributesbits-p))
    (declare (ignorable __function__))
    (mbe :logic (unsigned-byte-p 16 x)
         :exec (and (natp x) (< x 65536)))))

Theorem: code-segment-descriptor-attributesbits-p-when-unsigned-byte-p

(defthm
      code-segment-descriptor-attributesbits-p-when-unsigned-byte-p
  (implies (unsigned-byte-p 16 x)
           (code-segment-descriptor-attributesbits-p x)))

Theorem: unsigned-byte-p-when-code-segment-descriptor-attributesbits-p

(defthm
      unsigned-byte-p-when-code-segment-descriptor-attributesbits-p
  (implies (code-segment-descriptor-attributesbits-p x)
           (unsigned-byte-p 16 x)))

Theorem: code-segment-descriptor-attributesbits-p-compound-recognizer

(defthm code-segment-descriptor-attributesbits-p-compound-recognizer
  (implies (code-segment-descriptor-attributesbits-p x)
           (natp x))
  :rule-classes :compound-recognizer)