		Search-engine friendly clone of the ACL2 documentation.

Opcode

Opcode->feat

Get the feat field from a opcode.

Signature
(opcode->feat x) → feat
Arguments: x — Guard (opcode-p x).
Returns: feat — Type (symbol-listp feat).

This is an ordinary field accessor created by defprod.

Definitions and Theorems

Function: opcode->feat$inline

(defun opcode->feat$inline (x)
  (declare (xargs :guard (opcode-p x)))
  (declare (xargs :guard t))
  (let ((__function__ 'opcode->feat))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (acl2::symbol-list-fix
                (std::prod-car (std::prod-cdr (std::prod-cdr x)))))
         :exec (std::prod-car (std::prod-cdr (std::prod-cdr x))))))

Theorem: symbol-listp-of-opcode->feat

(defthm symbol-listp-of-opcode->feat
  (b* ((feat (opcode->feat$inline x)))
    (symbol-listp feat))
  :rule-classes :rewrite)

Theorem: opcode->feat$inline-of-opcode-fix-x

(defthm opcode->feat$inline-of-opcode-fix-x
  (equal (opcode->feat$inline (opcode-fix x))
         (opcode->feat$inline x)))

Theorem: opcode->feat$inline-opcode-equiv-congruence-on-x

(defthm opcode->feat$inline-opcode-equiv-congruence-on-x
  (implies (opcode-equiv x x-equiv)
           (equal (opcode->feat$inline x)
                  (opcode->feat$inline x-equiv)))
  :rule-classes :congruence)