On Wed, 2006-04-05 at 06:48 -0500, Mitchell Laks wrote: > Hi, > > I wanted to find out more about amd64, so I installed the debian distro
Did you install the 64 bit version? > (etch/sid) on my amd64 dual core system. ^^^^^^^^ Which one? Etch or Sid? > I wanted to see if it is really 64 bit. So naively i compiled the following > example program I found on the internet: > [snip] > Size of double is 8 > > So how do I see the 64 bittness of the operating system if not this way with > gcc? I would think tha size of int would be 8? > uname -a > Linux Rashi 2.6.16.1-meshulum-2006-4-5 #1 SMP Wed Apr 5 13:34:46 EDT 2006 > x86_64 GNU/Linux If you did actually install the 64 bit build, do a sizeof(int *) and you'll see that it is 64 bits. AMD decided that, to help with compatibility with s/w written when sloppy programmers assumed that sizeof(int) == sizeof(*), integers will be 32 bits, even in 64 bit mode. 64 bit integers are of type "long long" and int64, which are just different names for the same type. -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA "Politicians are the same all over. They promise to build a bridge where there is no river." Nikita Krushchev -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
