Initialize the Common Lisp floating-point parameters.
This sets the values of: `cl-most-positive-float', `cl-most-negative-float',
`cl-least-positive-float', `cl-least-negative-float', `cl-float-epsilon',
`cl-float-negative-epsilon', `cl-least-positive-normalized-float', and
`cl-least-negative-normalized-float'.
(fn)