add polynomial division

src/circuit/quotient.rs

@@ -1,4 +1,4 @@
-use super::dag::{Circuit, NodeId};
+use super::dag::{Circuit, Node, NodeId};
 use crate::poly::{flat::Poly, var::Var};
 
 use itertools::Itertools;
@@ -35,10 +35,10 @@ impl<V: Var> Quotient<V> {
         self.circuit.node(n)
     }
 
-    pub fn add(left: NodeId, right: NodeId) {
+    pub fn add(&mut self, left: NodeId, right: NodeId) -> NodeId {
         self.circuit.add(left, right)
     }
-    pub fn mul(left: NodeId, right: NodeId) {
+    pub fn mul(&mut self, left: NodeId, right: NodeId) -> NodeId {
         self.circuit.mul(left, right)
     }
 }