(def!constant most-positive-exactly-single-float-fixnum
(min #xffffff sb!xc:most-positive-fixnum))
(def!constant most-negative-exactly-single-float-fixnum
(def!constant most-positive-exactly-single-float-fixnum
(min #xffffff sb!xc:most-positive-fixnum))
(def!constant most-negative-exactly-single-float-fixnum