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• Defbytelist-standard-instances

Ubyte256-list

Fixtype of true lists of unsigned bytes of size 256.

This is an ordinary fty::deflist.

Theorem: ubyte256-listp-forward-unsigned-byte-listp

(defthm ubyte256-listp-forward-unsigned-byte-listp
  (implies (ubyte256-listp x)
           (unsigned-byte-listp 256 x))
  :rule-classes :forward-chaining)

Theorem: ubyte256-listp-rewrite-unsigned-byte-listp

(defthm ubyte256-listp-rewrite-unsigned-byte-listp
  (equal (ubyte256-listp x)
         (unsigned-byte-listp 256 x)))

Theorem: unsigned-byte-listp-rewrite-ubyte256-listp

(defthm unsigned-byte-listp-rewrite-ubyte256-listp
  (equal (unsigned-byte-listp 256 x)
         (ubyte256-listp x)))

Theorem: true-listp-when-ubyte256-listp-rewrite

(defthm true-listp-when-ubyte256-listp-rewrite
  (implies (ubyte256-listp x)
           (true-listp x)))

Theorem: ubyte256-list-fix-of-take

(defthm ubyte256-list-fix-of-take
  (implies (<= (nfix n) (len x))
           (equal (ubyte256-list-fix (take n x))
                  (take n (ubyte256-list-fix x)))))

Theorem: ubyte256-list-fix-of-rcons

(defthm ubyte256-list-fix-of-rcons
  (equal (ubyte256-list-fix (rcons a x))
         (rcons (ubyte256-fix a)
                (ubyte256-list-fix x))))

Subtopics

Ubyte256-list-fix

(ubyte256-list-fix x) is a usual fty list fixing function.

Ubyte256-list-equiv

Basic equivalence relation for ubyte256-list structures.

Ubyte256-listp

(ubyte256-listp x) recognizes lists where every element satisfies ubyte256p.