See the announcement, or read the documentation in the package.
Note that in July 2008, I split the array operation functions that do not depend on CFFI into the package ARRAY-OPERATIONS.
The package is asdf-installable. You can also download the latest version from Github. The license is LLGPL.
ASDF-install package (obsolete) http://github.com/tpapp/ffa/tarball/master
FFI