Ask HN: Rent a mathematician / numerical analyst?

Is there some place where I can pay to have math problems solved?

Specifically I'm looking for a fast accurate floating point implementation of log(I_n(x)) where I_n(x) is the modified Bessel function of the first kind. There are nice implementations of I_n(x) but taking the logarithm after the fact is awful for accuracy. Doing this right probably involves expressing it in terms of Chebyshev polynomials or some other weird functional analysis that I don't really feel like learning.