C API

[FlorianUekermann]

Both tsne.h and tsne_main.cpp seem to be almost entirely C code. Would you be opposed to a pull request making them C compatible? This would make your code usable as both C and C++ library, allowing for easy implementation of language bindings without intermediate files.

I am interested in this for the C library bindings and for contributing Go bindings.

[lvdmaaten]

Yeah, definitely! The current way of data serialization via files is obviously incredibly clunky.

This shouldn't require many code changes: adding a single C function that calls TSNE::run and is wrapped in an extern "C" block should suffice?

[FlorianUekermann]

Yes, pretty much. I thought since its pretty much entirely C anyway, the cleanest option would be just turn the two mentioned files plain C. The class seems to be abused as namespace. Anyway, I'll send a PR, then you can have a look.

[FlorianUekermann]

Thanks for merging.