3.1 Preliminary remark

At the moment, FEMLISP works only with double-float precision correctly. Therefore, you have to switch the default float format of your Common Lisp implementation to double-float. The best way to achieve this permanently, is via the initialization file of your CL implementation. For SBCL, this means to put the following line into your .sbclrc file:

(setq *READ-DEFAULT-FLOAT-FORMAT* 'double-float)