IEEE support and interval arithmetic



I need to have a interval arithmetic package. Richard Fateman has one,
ruan.lisp that is close but isn't completely in line with IEEE STD
754. Two questions:

1. Is there an IEEE standard package for either SBCL or Maxima? Or
should I put one together?

2. Is ruan.lisp the appropriate package?

Thanks in advance,

steve,
--
D. E. Stevenson
(Almost emeritus)