This is cool. The documentation is very entertaining, although not something you'd show to your boss. Looks like it implements a lot more than just neural networks.
Shameless plug: For a minimal neural network implementation in ANSI C, check out: https://github.com/codeplea/genann Sometimes lack of features is a feature.
Shameless plug: For a minimal neural network implementation in ANSI C, check out: https://github.com/codeplea/genann Sometimes lack of features is a feature.