Hi Robert,
The answer to your original question appears to be no, so the conversation turned to brainstorming solutions. However your question did not provide a clear scope and purpose or measure of fitness for such a development.
Answers to the following questions may help focus this conversation.
Why did you ask for the CFFI binding?
Do you want access to a bigger function library, better numeric performance, or something else?
Why would you prefer CFFI bindings to numpy over CFFI bindings to a custom kernel?
What schedule are you hoping for?
How would you value traits such as portability, performance, implementation effort, user effort, and schedule?
-- Daniel