# mat-vec-prod-exp *Matrix vector product experiments* Instructions: - Just run `cargo test -- --nocapture` and the number of constraints will be printed - Can comment & uncomment `lib.rs` lines `71` & `72` to test the different approaches: ```rust let Az = mat_vec_mul_sparse_gadget(A, z); // let Az = handcrafted_A_by_z(cs, z)?; ```