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Date:      Mon, 25 May 2009 13:09:52 +0200
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: why integer size says 4 bytes on 64 bit processor
Message-ID:  <gvdu9q$obo$1@ger.gmane.org>
In-Reply-To: <717ed9590905250355o3f3b836bm9e2e5abee03d50b2@mail.gmail.com>
References:  <717ed9590905250355o3f3b836bm9e2e5abee03d50b2@mail.gmail.com>

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Shakil Khan wrote:
> Hi All,
>=20
> Pardon me if I am writing this mail to the wrong group as I am too new =
to
> BSD and programming stuff. You can redirect me to right group without
> howling. By seeing some recent conversations(About the top status ;)) i=
n
> this group it made me nervous to ask for a silly question like this, bu=
t it
> intrigued my mind too much so thought to delve into it keeping aside my=

> fear.
>=20
> I have a 64bit intel processor, Dual core machine and I have installed =
64
> bit Linux as well as FreeBSD and thought of seeing the size of integer.=
 On
> both the platform my integer is showing 4 bytes which is 32 bit. I thou=
ght
> integer are the most basic of the data types and governs the architectu=
re as
> 32 bit or 64 bit, so why integer shows me 4bytes instead of 8. Does thi=
s
> means that even on 64 bit architecture we are limited to just 4GB of RA=
M.

Please read http://en.wikipedia.org/wiki/64-bit#Specific_data_models

FreeBSD and Linux use the LP64 model.


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