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Hash-op

Hash-op-kind

Get the kind (tag) of a hash-op structure.

Signature
(hash-op-kind x) → kind
Arguments: x — Guard (hash-opp x).

Definitions and Theorems

Function: hash-op-kind$inline

(defun hash-op-kind$inline (x)
  (declare (xargs :guard (hash-opp x)))
  (let ((__function__ 'hash-op-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :hash.bhp256))
                       :hash.bhp256)
                      ((eq (car x) :hash.bhp512) :hash.bhp512)
                      ((eq (car x) :hash.bhp768) :hash.bhp768)
                      ((eq (car x) :hash.bhp1024)
                       :hash.bhp1024)
                      ((eq (car x) :hash.ped64) :hash.ped64)
                      ((eq (car x) :hash.ped128) :hash.ped128)
                      ((eq (car x) :hash.psd2) :hash.psd2)
                      ((eq (car x) :hash.psd4) :hash.psd4)
                      (t :hash.psd8))
         :exec (car x))))

Theorem: hash-op-kind-possibilities

(defthm hash-op-kind-possibilities
  (or (equal (hash-op-kind x) :hash.bhp256)
      (equal (hash-op-kind x) :hash.bhp512)
      (equal (hash-op-kind x) :hash.bhp768)
      (equal (hash-op-kind x) :hash.bhp1024)
      (equal (hash-op-kind x) :hash.ped64)
      (equal (hash-op-kind x) :hash.ped128)
      (equal (hash-op-kind x) :hash.psd2)
      (equal (hash-op-kind x) :hash.psd4)
      (equal (hash-op-kind x) :hash.psd8))
  :rule-classes
  ((:forward-chaining :trigger-terms ((hash-op-kind x)))))