Author: Bruce Moreland
Date: 20:38:10 06/16/00
Go up one level in this thread
If you are talking about the alpha, it does 32-bits with no performance penalty, right? So the fact that an int is 32-bits on the Windows Alpha compiler shouldn't be a big deal. And they do provide good access to the 64-bit data type. Not that Alpha is anything these days. bruce On June 15, 2000 at 19:10:32, Eugene Nalimov wrote: >That's not true for some systems. Int is still 32 bits, but "natural" word size >is 64 bits. > >Eugene > >On June 15, 2000 at 17:28:26, Tom Kerrigan wrote: > >>On June 15, 2000 at 06:15:55, Christophe Theron wrote: >> >>>On June 14, 2000 at 17:29:07, Dave Gomboc wrote: >>> >>>>On June 14, 2000 at 16:17:25, Christophe Theron wrote: >>>> >>>>>The availability of 64 bits processors changes nothing. Unless some 64 bits >>>>>processors are so lousy that 8, 16 and 32 bits operations become slower than 64 >>>>>bits ops...! :) >>>> >>>>I don't think it is unusual for certain operations on sizes smaller than the >>>>processor word size to take longer than they would if they used the processor's >>>>word size. Indeed, it wouldn't even be unusual for it to be possible without >>>>first sign-extending or zero-extending from the smaller size to the processor >>>>word size. AFAIK, 80x86 is a bit freaky in that it tries very hard to support >>>>8-bit and 16-bit operations in registers as quickly as 32-bit operations. >>>> >>>>Dave >>> >>> >>>That would be a very unfair way for bitboards to win the contest! :) >>> >>> >>> Christophe >> >>Just define everything in your program as an int. It will automatically use the >>processor's word size, so problem solved. :) >>-Tom
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.