(num-ins aignet) returns the number of primary input nodes in an aignet.
Logically this is just
In the execution this is just a stobj field access.
Function:
(defun aignet$a::num-ins (aignet) (declare (xargs :guard (aignet$a::aignet-well-formedp aignet))) (let ((__function__ 'aignet$a::num-ins)) (declare (ignorable __function__)) (stype-count (pi-stype) aignet)))