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Write-bytes-to-channel

Write bytes to an output channel.

;; Writes the BYTES to CHANNEL.  Returns STATE.
(defund write-bytes-to-channel (bytes channel state)
  (declare (xargs :stobjs state
                  :guard (and (all-bytep bytes)
                              (symbolp channel)
                              (open-output-channel-p channel :byte state))
                  :guard-hints (("Goal" :in-theory (enable open-output-channel-p
                                                           open-output-channel-p1 ; todo
                                                           )))))
  (if (atom bytes)
      state
    (pprogn (write-byte$ (car bytes) channel state)
            (write-bytes-to-channel (cdr bytes) channel state))))