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• Bitops/signed-byte-p

Signed-byte-p-of-loghead

An N-bit loghead is an M-bit signed for any M > N.

Definitions and Theorems

Theorem: signed-byte-p-of-loghead

(defthm signed-byte-p-of-loghead
  (implies (and (integerp m) (< (nfix size) m))
           (signed-byte-p m (loghead size x))))