**Class Precedence List:**

**ratio**, **rational**, **real**, **number**, **t**

**Description:**

A *ratio* is a *number* representing the mathematical ratio of two non-zero integers, the numerator and denominator, whose greatest common divisor is one, and of which the denominator is positive and greater than one.

**See Also:**

Figure 2-9, Section 2.3.2 (Constructing Numbers from Tokens), Section 22.1.3.1.2 (Printing Ratios)

The following X3J13 cleanup issue,