The type real includes all numbers that represent mathematical real numbers, though there are mathematical real numbers (e.g. irrational numbers) that do not have an exact representation in Common Lisp. Only reals can be ordered using the <, >, <=, and >= functions.
Abbreviating.
This denotes the reals on the interval described by lower-limit and upper-limit.
\issue{REAL-NUMBER-TYPE:X3J13-MAR-89} \issue{REAL-NUMBER-TYPE:X3J13-MAR-89}