Andrew Johnson

In terms of c++, just the example I posted in the issue. Im not sure if there are other examples or wider impacts, since this a subset of the issues...

@spinkney I was looking at the [quantile function for the negative-binomial](https://www.boost.org/doc/libs/1_78_0/libs/math/doc/html/math_toolkit/dist_ref/dists/negative_binomial_dist.html#math_toolkit.dist_ref.dists.negative_binomial_dist.implementation), and it appears to require the inverse of the incomplete beta function, but when the function is inverted on...

Ahh of course, forgot about all of that. Will just stick with the continuous distributions!

> I think all of these hypergeometric functions should (eventually) call the ones in Boost, which have been included in the last several versions. > > https://www.boost.org/doc/libs/1_79_0/libs/math/doc/html/math_toolkit/hypergeometric.html > > It...

This is now ready for review. I've updated `hypergeometric_3F2` to delegate to the `hypergeometric_pFq` (and boost's implementation). However there are some combinations of arguments which Boost says won't converge, even...

@serban-nicusor-toptal would you be able to have a look at the CI for this PR when you have a sec? It looks like the `gelman-group-linux` machine is having issues

It looks like the current 3.4 release has a bug with handling `-inf` arguments to exp, which has since been resolved in the development branch. Using the testing code: ```cpp...

It's what's causing the current distribution test failures, since the log cdf of the gumbel with `Inf` inputs is no longer zero. So we could add a tolerance to the...

Sounds good to me

Yeah agreed. Probably easiest to do the Stan Math changes first, so we can make sure they're backwards compatible-ish before the Eigen changes go in