		Search-engine friendly clone of the ACL2 documentation.

Rflag-specifications

Of-spec16

Signature
(of-spec16 signed-raw-result) → *

Definitions and Theorems

Function: of-spec16$inline

(defun of-spec16$inline (signed-raw-result)
  (declare (type (signed-byte 17)
                 signed-raw-result))
  (bool->bit (mbe :logic (not (signed-byte-p 16 signed-raw-result))
                  :exec (or (not (<= -32768 signed-raw-result))
                            (not (< signed-raw-result 32768))))))

Theorem: n01p-of-spec16

(defthm n01p-of-spec16
 (unsigned-byte-p 1 (of-spec16 signed-raw-result))
 :rule-classes
 (:rewrite
  (:type-prescription
     :corollary (bitp (of-spec16 signed-raw-result))
     :hints
     (("Goal"
           :in-theory
           '(unsigned-byte-p integer-range-p natp bitp (:e expt)))))
  (:linear
   :corollary (and (<= 0 (of-spec16 signed-raw-result))
                   (< (of-spec16 signed-raw-result) 2))
   :hints
   (("Goal"
        :in-theory '(unsigned-byte-p integer-range-p (:e expt)))))))