pub trait BandMatrix<T>: Matrix<T> {
// Required methods
fn sub_diagonals(&self) -> c_int;
fn sup_diagonals(&self) -> c_int;
}
pub trait BandMatrix<T>: Matrix<T> {
// Required methods
fn sub_diagonals(&self) -> c_int;
fn sup_diagonals(&self) -> c_int;
}