JuliaLang/julia

Missing GCD methods on complex numbers

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#35,125 opened on Mar 16, 2020

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complexhelp wantedmaths

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Description

In Julia 1.3.1, there is no methods gcd(::Complex{<:Integer}, ::Complex{<:Integer}).

However, it is possible to define gcd on any Euclidean domain, of which $\mathbb{Z}[i]$ is one.

Contributor guide

Research direction
Study Julia's existing gcd implementation for integers and extend it to handle Complex{<:Integer} using the Euclidean algorithm for Gaussian integers.
Tech stack
julia
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Julia
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40