I have written and tested a ruby program which generates a program in Ruby, C, C++, Maple or Maxima to solve a system of ordinary differential equations using long Taylor series.

See http://sode.sourceforge.net/

The test results are at 
http://sode.sourceforge.net/omniresults/comprehensive_tests_0001/table.html

Dennis J. Darland
dennis.darland / yahoo.com
http://dennisdarland.com/
http://dennisdarland.com/dennisdaze/
http://dennisdarland.com/philosophy/
http://sode.sourceforge.net/
"Because you often have to react quickly to emergencies and opportunities alike, your brain usually aims to get a half-assed answer in a hurry rather than a perfect answer that takes a while to figure out." - Sandra Aamodt, PhD and Sam Wang, PdD in _Welcome to Your Brain_ (5%)