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    • States64

    Error64p

    Check if the error flag in the state is set.

    Signature
    (error64p stat) → yes/no
    Arguments
    stat — Guard (state64p stat).
    Returns
    yes/no — Type (booleanp yes/no).

    Definitions and Theorems

    Function: error64p

    (defun error64p (stat)
      (declare (xargs :guard (state64p stat)))
      (let ((__function__ 'error64p))
        (declare (ignorable __function__))
        (state64->error stat)))

    Theorem: booleanp-of-error64p

    (defthm booleanp-of-error64p
      (b* ((yes/no (error64p stat)))
        (booleanp yes/no))
      :rule-classes :rewrite)

    Theorem: error64p-of-state64-fix-stat

    (defthm error64p-of-state64-fix-stat
      (equal (error64p (state64-fix stat))
             (error64p stat)))

    Theorem: error64p-state64-equiv-congruence-on-stat

    (defthm error64p-state64-equiv-congruence-on-stat
      (implies (state64-equiv stat stat-equiv)
               (equal (error64p stat)
                      (error64p stat-equiv)))
      :rule-classes :congruence)