Function linxal::properties::is_triangular_tol

pub fn is_triangular_tol<T, D, F>(
    mat: &ArrayBase<D, Ix2>, 
    uplo: Symmetric, 
    tolerance: F
) -> bool where
    T: LinxalImplScalar,
    D: Data<Elem = T>,
    F: Into<T::RealPart>, 

Return true iff the matrix is triangular / trapezoidal, with the side specified by uplo.