CGAL 5.3.1 - Algebraic Foundations
Fraction Concept Reference

Definition

A type is considered as a Fraction, if there is a reasonable way to decompose it into a numerator and denominator. In this case the relevant functionality for decomposing and re-composing as well as the numerator and denominator type are provided by CGAL::Fraction_traits.

See also
FractionTraits
CGAL::Fraction_traits<T>