From: Rob Biedenharn <rob@...>
Date: 2013-05-21T06:22:46+09:00
Subject: Re: RubyInstaller 2.0.0-p195 released


On 2013-May-20, at 12:24 , Jabari Z. wrote:

> I installed ruby-2.0.0-p195 on Windows 7 Premium Home Edition (64-bit)
> but it has 32-bit numbers versus 64-bit ones.
> 
> So if you do this you get
>> (2**32).class
> =>  Bignum
> 
> For a 64-bit build numbers should be Fixnum all the way up to (2**63-1).
> 
> On my VirtualBox install of Linux Mint 14 (64-bit) that is what I get
> for rvm install of ruby-2.0.0-p195

Just ask ruby for the size of a known Fixnum:

$ ruby -v -e 'puts 1.size'
ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin11.4.2]
8

Fixnum#size returns the number of bytes in the representation. On a 32-bit system, you'd get 1.size==4 instead.

-ROb