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Forum Topic - GCC does not handle uint64 as a 64 bit targeting x86: (2 Items)

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Tim Gessner

10/16/2008 11:41 AM

post15094

GCC does not handle uint64 as a 64 bit targeting x86

I am trying to do some large integer math.  I have tried _uint64 and uint64_t and unsigned long long but all I get are 
32 bit values.

I am targeting x86 and using GCC 3.3.5.  In every case I get an error that the integer constant is too large.

It seems very strange that a 64 bit unsigned integer is not supported.  Is this deliberate or is it a compiler problem 
or ???

Is there any work around?

Thanx
Tim

Tim Gessner

10/16/2008 11:58 AM

post15096

Re: GCC does not handle uint64 as a 64 bit targeting x86

Ok, it seems that I need to add "LL" and not just "L" to the constant.  Which makes sense, but wasn't my first thought.

Things seem to be working correctly now.

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