From: Justin Collins <justincollins@...>
Date: 2010-01-10T12:45:56+09:00
Subject: Re: Confusing docs . . . how do I use gcd2?

Michael W. Ryder wrote:
> Justin Collins wrote:
>> Justin Collins wrote:
>>> Matt wrote:
>>>> On Jan 9, 8:32 pm, Matt <mgregor...@gmail.com> wrote:
>>>>  
>>>>> The standard library docs don't make sense to me a lot of the time.
>>>>> How do I use the gcd2 method in class Integer (or is it in file
>>>>> mathn.rb . . . no idea)?
>>>>>     
>>>> Here's a link to what I'm looking at:
>>>> http://www.ruby-doc.org/stdlib/libdoc/mathn/rdoc/classes/Integer.html#M000926 
>>>>
>>>>
>>>>   
>>> Both, sort of.
>>>
>>> ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-linux]
>>>
>>> irb(main):001:0> require 'mathn'
>>> => true
>>> irb(main):002:0> 12.gcd(4)
>>> => 4
>>>
>>> -Justin
>>>
>>
>> Sorry, that should be gcd2.
>>
>> -Justin
>>
> For your information gcd works with 1.9.1 but gcd2 does not.  Not sure 
> what the difference between gcd and gcd2 are and why gcd2 was dropped 
> from mathn in 1.9.1.
>

I don't know, exactly, either.
Here is the thread referenced by the changelog: 
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/7931

-Justin