In article <3C9A3A90.C6D96248 / path.berkeley.edu>,
Joel VanderWerf  <vjoel / PATH.Berkeley.EDU> wrote:
>
>A minor comment: you can use Math::exp instead of defining it yourself.
>
>I'm glad to see other folks using Ruby for simulation. I'm using it for
>hybrid systems simulations--hybrid systems are finite state machines
>with ODE's attached to each state--of vehicle and controllers.

What's an ODE?

>
>Any other simulation folks out there?
>

I made something called RHDL (Ruby Hardware Description Language) for 
doing hardware simulations (digital logic).  It's still kind of a toy at 
this point.  But I am interested in simulation.

Phil