Hi,
I am happy to announce the release of version 0.6.9 of odepack. Odepack is a library to solve Cauchy problems, that is ordinary differential equations (ODE) of the form ∂ₜy(t) = f(t,y(t)) with initial conditions y(t₀) = y₀. It has root searching capabilities for quantities depending on the solution t ↦ y(t). The OCaml version is a binding to the FORTRAN code.
Enjoy! 
C.