I have gone through issue#294[1], and the PR[2], matbesancon, who made the PR wrote the #TODO for every unchecked distribution in the issue. (Hypergeometric, NegativeBinomial, NoncentralChisq, poison, and skellam) but apparently, most of them have been worked upon in some or the other PRs and have been merged. The only distributions left to be modified are Hypergeometric, NoncentralChisq, Noncentralbeta, and Noncentralf. After searching other PRs, I found another WIP PR which completely removes the Rmath dependence. I just wanted to ensure my analysis here is correct before proceeding further to work on it.