[flavio81]

This is an excellent reply and I think it goes to the crux of the problem you were facing.

Perhaps, then, Julia makes sense in those cases.

Or, it's time for an enhanced Common Lisp implementation targeted specifically for scientific computing. I agree that one thing is "extending the language" and other is "implementing things that the compiler should have given me. "

[reikonomusha]

SBCL is already suitable for scientific computing. All that's needed are good engineers who can write good libraries.

[lispm]

'Scientific computing' is a wide area. One recent shot at is CLASP, especially to reuse scientific computing tools from the C++ world:

https://github.com/drmeister/clasp