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| ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
12.2.6 rational | System Class
Class Precedence List: rational, real, number, t Description: The canonical representation of a rational is as an integer if its value is integral, and otherwise as a ratio. The types integer and ratio are disjoint subtypes of type rational. Compound Type Specifier Kind: Abbreviating. Compound Type Specifier Syntax: `(rational `[`lower-limit [upper-limit)``]`] Compound Type Specifier Arguments: lower-limit, upper-limit - interval designators for type rational. The defaults for each of lower-limit and upper-limit is the symbol *. Compound Type Specifier Description: This denotes the rationals on the interval described by lower-limit and upper-limit. Allegro CL Implementation Details: None.

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