Exact arithmetic with quadratic irrationals

[Timon Gehr via Digitalmars-d]

On 20.04.2017 02:01, Timon Gehr wrote:
>
> To get the formula for multiplicative inverses, one possible algorithm is:
> https://en.wikipedia.org/wiki/Extended_Euclidean_algorithm#Polynomial_extended_Euclidean_algorithm
>
>

Better reference: 
https://en.wikipedia.org/wiki/Polynomial_greatest_common_divisor#Arithmetic_of_algebraic_extensions