I'm look at writing some code to simulate some electronics and need to model some transistors. Does anyone know of a resource that has models for several kinds? (Or at least several kinds with high gate impedances and fairly linear analog performance as that's what I'm going to need.)
Systems of equations and tables of values for stock components would work but functional code with C bindings would be better.
You could look at an implementation of Spice, such as http://embedded.eecs.berkeley.edu/pubs/downloads/spice/index.htm or http://ngspice.sourceforge.net/ . Spice is a very old and very popular modelling program, so whether you end up using it or doing your own thing, it's an important reference point.
There's QUCS, a simulator like SPICE but a whole different implementation. Good for a "second opinion" on transistor models after studying the models SPICE provides. http://qucs.sourceforge.net/