hi there, all!

[Gilles Gravier]

Hi!

Matthew Flaschen wrote:
> Gilles Gravier wrote:
>   
>> 64 bits doesn't give you "better computation power". It gives you more
>> addressing space. That's all.
>>
>> The price you have to pay is that for every operation you tend to have
>> to move around twice the amount of data than with 32 bits.
>>     
>
> It's not true that every data structure is twice as big.  Only longs and
> pointers are twice as big.  Everything smaller is unchanged.  See
> http://www.unix.org/whitepapers/64bit.html
>
> However, I agree that many use cases do have worse performance.
>   

I was schematizing to make it simple...

Point remains. Don't use 64 bits unless you need to manipulate data that
requires 64 bit addressing.

Gilles