[Numpy-discussion] bare bones numpy extension code

A colleague of mine wants to write some numpy extension code. I pointed him to lots of examples in the matplotlib src dir, but the build environment is more complicated than he needs with all the numpy/numeric/numarray switches, etc. Does someone have the basic "hello world" of numpy extensions that includes src code and a basic setup.py that I can pass on to him. It might be nice to include something like that in a numpy "examples" directory. JDH