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    Lhatom-overridemux-eval

    Signature
    (lhatom-overridemux-eval x env out) → val
    Arguments
    x — Guard (lhatom-p x).
    env — Guard (svex-env-p env).
    out — Guard (svex-env-p out).
    Returns
    val — Type (4vec-p val).

    Definitions and Theorems

    Function: lhatom-overridemux-eval

    (defun lhatom-overridemux-eval (x env out)
     (declare (xargs :guard (and (lhatom-p x)
                                 (svex-env-p env)
                                 (svex-env-p out))))
     (let ((__function__ 'lhatom-overridemux-eval))
      (declare (ignorable __function__))
      (lhatom-case
       x
       :z 0
       :var
       (4vec-rsh
         (2vec x.rsh)
         (if
           (svar-override-p x.name :val)
           (4vec-bit?!
                (svex-env-fastlookup (svar-change-override x.name :test)
                                     env)
                (svex-env-fastlookup x.name env)
                (svex-env-fastlookup (svar-change-override x.name nil)
                                     out))
           (svex-env-fastlookup x.name env))))))

    Theorem: 4vec-p-of-lhatom-overridemux-eval

    (defthm 4vec-p-of-lhatom-overridemux-eval
      (b* ((val (lhatom-overridemux-eval x env out)))
        (4vec-p val))
      :rule-classes :rewrite)

    Theorem: lhatom-overridemux-eval-of-lhatom-fix-x

    (defthm lhatom-overridemux-eval-of-lhatom-fix-x
      (equal (lhatom-overridemux-eval (lhatom-fix x)
                                      env out)
             (lhatom-overridemux-eval x env out)))

    Theorem: lhatom-overridemux-eval-lhatom-equiv-congruence-on-x

    (defthm lhatom-overridemux-eval-lhatom-equiv-congruence-on-x
      (implies (lhatom-equiv x x-equiv)
               (equal (lhatom-overridemux-eval x env out)
                      (lhatom-overridemux-eval x-equiv env out)))
      :rule-classes :congruence)

    Theorem: lhatom-overridemux-eval-of-svex-env-fix-env

    (defthm lhatom-overridemux-eval-of-svex-env-fix-env
      (equal (lhatom-overridemux-eval x (svex-env-fix env)
                                      out)
             (lhatom-overridemux-eval x env out)))

    Theorem: lhatom-overridemux-eval-svex-env-equiv-congruence-on-env

    (defthm lhatom-overridemux-eval-svex-env-equiv-congruence-on-env
      (implies (svex-env-equiv env env-equiv)
               (equal (lhatom-overridemux-eval x env out)
                      (lhatom-overridemux-eval x env-equiv out)))
      :rule-classes :congruence)

    Theorem: lhatom-overridemux-eval-of-svex-env-fix-out

    (defthm lhatom-overridemux-eval-of-svex-env-fix-out
      (equal (lhatom-overridemux-eval x env (svex-env-fix out))
             (lhatom-overridemux-eval x env out)))

    Theorem: lhatom-overridemux-eval-svex-env-equiv-congruence-on-out

    (defthm lhatom-overridemux-eval-svex-env-equiv-congruence-on-out
      (implies (svex-env-equiv out out-equiv)
               (equal (lhatom-overridemux-eval x env out)
                      (lhatom-overridemux-eval x env out-equiv)))
      :rule-classes :congruence)