From: Lionel Bouton <lionel-subscription@...>
Date: 2007-07-29T07:56:17+09:00
Subject: Re: checking if machine is 64-bit

Suraj Kurapati wrote:
> Suraj Kurapati wrote:
>   
>>   is_machine_64_bit = (2 ** 32).is_a? Fixnum
>>     
>
> Hmm, after reading the ri manpage for Fixnum, I found a better way:
>
>   (-1.size) is 4 on a 32-bit machine and 8 on a 64-bit machine.
>   

I don't know if it matters to you, but IIRC there are architectures with
different sizes for integers and memory addresses (64 bit integers with
32 bit addresses if memory serves).

Lionel.