2.3.2 Installation of a CL implementation

There are two free Common Lisp implementations with which Femlisp is known to work, namely CMUCL and SBCL. It runs also on Allegro CL, and should run with little changes on Scieneer CL. Femlisp compiles also with ECL or GCL, however, the test suite still does not work, and the resulting code is very slow. Similarly, using Femlisp with interpreters or bytecode compilers like CLISP does not make much sense, because such implementations are probably much too slow. Also using Lispworks, Corman CL, and OpenMCL will probably be too slow, because those implementations are to my knowledge not strong enough with respect to fast floating point arithmetic.