Function pointcloud::metrics::l2_misc::sq_l2_sparse_i16_f32

pub fn sq_l2_sparse_i16_f32<S>(
    x_ind: &[S], 
    x_val: &[i16], 
    y_ind: &[S], 
    y_val: &[i16]
) -> f32 where
    S: Ord, 

basic sparse function