The xmds team is pleased to announce the release of xmds-1.6.5.

xmds is the eXtensible Multi-Dimensional Simulator and is a code
generator that integrates equations. You write them down in human
readable form in a XML file, and it goes away and writes and compiles
a C++ program that integrates those equations as fast as it can
possibly be done in your architecture. Simulations created with xmds
are able to be automatically parallelised and use MPI or OpenMP to
run your simulations in a parallel computing environment. xmds also
features the ability to output its simulation data in various
visualisation packages: Matlab, Octave, Mathematica and Gnuplot.

New features / changes since last release:

* Various bug fixes - new no known bug status
* Superior treatment of extreme cases in adaptive algorithms
* Simulation can halt if the solution goes non-finite.
Put this in the appropriate integration...

"rblove@gmail.com" gmail.com> writes:

Code 500 is a division within Goddard Spaceflight Center.

My guess is that a trajectory format would be associated with the
Flight Dynamics Facility (FDF). I've never heard of such a format
myself (I work in a different Code NNN), but you may be able to
inquire with FDF, based on their contact page at fdf.gsfc.nasa.gov.

Good luck!
Craig