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• Bitops/signed-byte-p

Basic-unsigned-byte-p-of-truncate

Truncate an N-bit unsigned by a natural creates an N-bit unsigned.

Definitions and Theorems

Theorem: basic-unsigned-byte-p-of-truncate

(defthm basic-unsigned-byte-p-of-truncate
  (implies (and (unsigned-byte-p n a) (natp b))
           (unsigned-byte-p n (truncate a b))))