		Search-engine friendly clone of the ACL2 documentation.

Byte-value

Byte-value->int

Get the int field from a byte-value.

Signature
(byte-value->int x) → int
Arguments: x — Guard (byte-valuep x).
Returns: int — Type (sbyte8p int).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: byte-value->int$inline

(defun byte-value->int$inline (x)
  (declare (xargs :guard (byte-valuep x)))
  (declare (xargs :guard t))
  (let ((__function__ 'byte-value->int))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (acl2::sbyte8-fix (std::da-nth 0 (cdr x))))
         :exec (std::da-nth 0 (cdr x)))))

Theorem: sbyte8p-of-byte-value->int

(defthm sbyte8p-of-byte-value->int
  (b* ((int (byte-value->int$inline x)))
    (sbyte8p int))
  :rule-classes :rewrite)

Theorem: byte-value->int$inline-of-byte-value-fix-x

(defthm byte-value->int$inline-of-byte-value-fix-x
  (equal (byte-value->int$inline (byte-value-fix x))
         (byte-value->int$inline x)))

Theorem: byte-value->int$inline-byte-value-equiv-congruence-on-x

(defthm byte-value->int$inline-byte-value-equiv-congruence-on-x
  (implies (byte-value-equiv x x-equiv)
           (equal (byte-value->int$inline x)
                  (byte-value->int$inline x-equiv)))
  :rule-classes :congruence)