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Memory64

Memory64-fix

Fixer for memory64.

Signature
(memory64-fix x) → *
Arguments: x — Guard (memory64p x).

Definitions and Theorems

Function: memory64-fix

(defun memory64-fix (x)
  (declare (xargs :guard (memory64p x)))
  (mbe :logic
       (if (memory64p x)
           x
         (acl2::ubyte8-list-fix (take 18446744073709551616 x)))
       :exec x))

Theorem: memory64p-of-memory64-fix

(defthm memory64p-of-memory64-fix
  (memory64p (memory64-fix x)))

Theorem: memory64-fix-when-memory64p

(defthm memory64-fix-when-memory64p
  (implies (memory64p x)
           (equal (memory64-fix x) x)))