> I was looking for an ODE library with a Fortran 90 interface and my web > searches mentioned a Fortran 90 implementation of RKSUITE (Runge-Kutta). > Netlib seems to have only the f77 version, and some strange f90.uu file > listed as Fortran 90. Since the recent discussion is still in everyone's minds, I feel I can mention without caveats that, of course, NUMERICAL RECIPES has this. :-) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%