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A general description is here.
‘matrix(x, n,m)’ now warns in more cases where ‘length(x)’ is larger than ‘n * m’; suggested by Abby Spurdle and Wolfgang Huber in Feb.2021 on R-devel (mailing list).
‘qnbinom(p, size, mu)’ for large ‘size/mu’ is correct now in a range of cases (PR#18095); similarly for the ‘(size, prob)’ parametrization of the negative binomial. Also ‘qpois()’ and ‘qbinom()’ are better and or faster for extreme cases. The underlying C code has been modularized and common to all four cases of discrete distributions.
‘qnbinom(p, size, mu)’ for large ‘size/mu’ now warns when it loses
accuracy. We plan to improve it instead (PR#18095).