Make function signatures conform to assignment

tests/test.rs

@@ -6,8 +6,6 @@ mod tests {
     use rand::rngs::OsRng;
     #[test]
     fn test_scalar_comparison_via_circuit() {
-        let circuit = Circuit::compare_n_bit_numbers(256);
-
         for _ in 0..100 {
             let a = Scalar::random(&mut OsRng);
             let b = Scalar::random(&mut OsRng);
@@ -22,7 +20,8 @@ mod tests {
             input_bits.extend_from_slice(&b_bits);
 
             // Evaluate the comparison circuit
-            let circuit_result = circuit.clone().eval(input_bits);
+            let circuit = Circuit::compare_n_bit_numbers(256, input_bits);
+            let circuit_result = circuit.clone().eval();
 
             // Compare expected result using BigUint
             let a_int = BigUint::from_bytes_le(&a.to_bytes());