On Wed, Apr 05, 2006 at 06:48:29AM -0500, Mitchell Laks wrote: > Hi, > > I wanted to find out more about amd64, so I installed the debian distro > (etch/sid) on my amd64 dual core system. > > I wanted to see if it is really 64 bit. So naively i compiled the following > example program I found on the internet: > ... > Size of int is 4 > Size of short is 2 > Size of long is 8 well, i see 2 points: first of all there are 2 things that can be 64bit in a processor: adressing and data that can be processed in one op... so the addressing on amd64 is 64 bit (virutal, hw is only 48 bit at the moment)... i don't know about the data bandwith of the alu, though i think it is 64 bit..
and another: the implemnetation of the c compiler does not have to be the same as the hw bandwith... also...long is only 4 bytes (32 bit) on normal i386 cpus... yours albert -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
