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System Class REAL

Class Precedence List

real, number, t

Description

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.

The types rational and float are disjoint subtypes of real.

Compound Type Specifier Kind

Abbreviating.

Compound Type Specifier Syntax

  • real [lower-limit [upper-limit]]

Compound Type Specifier Arguments

Compound Type Specifier Description

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}