64 bits int on ia32

64 bits int on ia32

[Ricardo Catalinas Jimenez]

Hi everybody,

I know the 'long long' type, I also try 'sizeof(long long)' and it returns 8.
But when I use it, the max number it can store is 0xffffffff.

So, is there any way to get 64bits ints on a ia32? (of course I am talking
only about the gcc compiler, I know that I can't manage those amounts of bits
and store them on a general porpouse register)


Thanks in advance.
-- 
Ricardo Catalinas Jimenez    Madrid, Spain.
th1nk3r(at)server01(dot)org  citizen01@jabber.org 
My gpg public key at: http://www.server01.org/pubkey

Re: 64 bits int on ia32

[Ron Michael Khu]

how about using "unsigned"??

Ricardo Catalinas Jimenez wrote:

>Hi everybody,
>
>I know the 'long long' type, I also try 'sizeof(long long)' and it returns 8.
>But when I use it, the max number it can store is 0xffffffff.
>
>So, is there any way to get 64bits ints on a ia32? (of course I am talking
>only about the gcc compiler, I know that I can't manage those amounts of bits
>and store them on a general porpouse register)
>
>
>Thanks in advance.
>  
>

Re: 64 bits int on ia32

[Jan-Benedict Glaw]

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On Sat, 2004-10-09 16:17:39 +0200, Ricardo Catalinas Jimenez <th1nk3r@server01.org>
wrote in message <20041009141739.GA2134@jehuty.server01.org>:
> Hi everybody,
> 
> I know the 'long long' type, I also try 'sizeof(long long)' and it returns 8.
> But when I use it, the max number it can store is 0xffffffff.

How did you check that this is the largest number? I guess you either
used a wrong format specifier for a printf call (that'd clamp the value
to it's low-order long value). Also note that you should probably add a
type suffix of "LL" or "ULL" to that value, cf. 6.4.4.1 of the C99
standard.

So how did you use the long long typed variable?

MfG, JBG

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Re: 64 bits int on ia32

[Ron Michael Khu]

He already solved it =)

he was using the wrong formatting symbol...


Jan-Benedict Glaw wrote:

>On Sat, 2004-10-09 16:17:39 +0200, Ricardo Catalinas Jimenez <th1nk3r@server01.org>
>wrote in message <20041009141739.GA2134@jehuty.server01.org>:
>  
>
>>Hi everybody,
>>
>>I know the 'long long' type, I also try 'sizeof(long long)' and it returns 8.
>>But when I use it, the max number it can store is 0xffffffff.
>>    
>>
>
>How did you check that this is the largest number? I guess you either
>used a wrong format specifier for a printf call (that'd clamp the value
>to it's low-order long value). Also note that you should probably add a
>type suffix of "LL" or "ULL" to that value, cf. 6.4.4.1 of the C99
>standard.
>
>So how did you use the long long typed variable?
>
>MfG, JBG
>
>  
>