From: none on 6 Feb 2010 14:02 On Thu, 04 Feb 2010 23:47:34 -0800, jwm wrote: > On Feb 4, 7:38 am, Alexander Erlich <alexander.erl...(a)gmail.com> > wrote: >> Hello, >> >> because of the equations I typed my question in Latex and uploaded it >> here:http://www.airlich.de/Semester5/Fragen/Nichtlineare_Dynamik/Fortran_W... >> >> What do you think about it? >> >> Alexander Erlich > > You can start by browsing the netlib repository ( http://www.netlib.org/liblist.html > ). Maybe odepack fits your needs. My Google search didn't find anything. WOuld be interesting if you post back comparing the standard solvers: high-order RK, Adams, Gear, extrapolation, compared against an analytic solution. For one problem that is commonly used as an 'analytic' solution the RK solution with the smallest step length possible was used - forcing the step length across the integration region to be close to the roundoff limit at that time step.
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