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• Npn4arr

Get-npn4

Read the nth element of the npn4arr array.

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

Function: npn4s$ai

(defun npn4s$ai (stobjs::i npn4arr$a)
 (declare
      (xargs :guard (and (npn4arr$ap npn4arr$a)
                         (integerp stobjs::i)
                         (<= 0 stobjs::i)
                         (< stobjs::i (npn4s$a-length npn4arr$a)))))
 (ec-call (maybe-npn4-fix (ec-call (nth stobjs::i npn4arr$a)))))