rational | System Class |

**Class Precedence List****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`.