CGAL users discussion list

[Michael Hemmer <>]

Mahmood Naderan wrote:

> Hello,
> How it is possible to convert a rational value to float or double or integer?
> In other word, I want something like "Alg_point_2   <--   Rat_point_2".
There is CGAL::to_double which converts a number into double. (see also 
CGAL::To_interval)

In case you want to convert to Integer you can use 
CGAL::Fraction_traits<Rational>. The traits can decompose a type and 
provides the correct Numerator and Denominator type.
Supported types are CORE::BigRat, leda::rational, Gmpq and others.


Michael