pub fn vk_upper_with_ri_v_sync(
    ri3fn: &mut Option<RIFull<f64>>,
    eigv: &[MatrixFull<f64>; 2],
    homo: [usize; 2],
    occupation: &[Vec<f64>; 2],
    spin_channel: usize,
    scaling_factor: f64
) -> Vec<MatrixUpper<f64>>Notable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
    A: Allocator,