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• Ubdd-arr

Get-ubdd

Read the nth element of the ubdd-arr array.

In the execution this is an array access, but the logical definition is just a thin wrapper for nth:

Function: ubdds$ai

(defun ubdds$ai (stobjs::i ubdd-arr$a)
  (declare (xargs :guard (and (ubdd-arr$ap ubdd-arr$a)
                              (integerp stobjs::i)
                              (<= 0 stobjs::i)
                              (< stobjs::i
                                 (ubdds$a-length ubdd-arr$a)))))
  (ec-call (acl2::ubdd-fix (ec-call (nth stobjs::i ubdd-arr$a)))))