From: "F. Senault" <fred@...>
Date: 2008-09-04T08:44:24+09:00
Subject: Re: Can a Ruby program determine whether it's running on a 32-bit or  64-bit system?

Le 3 septembre 2008 � 02:42, Eric Promislow a �crit :

> I can't go by RUBY_PLATFORM -- I'm setting up a new 32-bit Linux box,
> and RUBY_PLATFORM is set to "i686-linux".

Pack has a support for native size :

>> RUBY_PLATFORM
=> "i386-freebsd6"
>> [ -1 ].pack('l!').length
=> 4

While...

>> RUBY_PLATFORM
=> "amd64-freebsd7"
>> [ -1 ].pack('l!').length
=> 8

(From the Pickaxe : 'Any of the directives "sSiIlL" may be followed by
an underscore (_) or bang (!) to use the underlying  platform's native
size for the specified type')

Fred
-- 
When I was a child I had a fever.  My hands felt just like two balloons.
                   Now I got that feeling once again.
I can't explain, you would not understand.         This is not how I am.
I have become comfortably numb.           (Pink Floyd, Comfortably Numb)