Warning with 64-Bit datatype

Vincent Torri torri@math.u-strasbg.fr
Thu Jul 15 08:18:00 GMT 2004


try to add another L at the end of the constant

hth

Vincent TORRI


On Thu, 15 Jul 2004, Michael Pfeiffer wrote:

> Hi,
> 
> I get some warnings with following code:
> 
> __int64 hash;
> 
> hash=(hash<<1) & 0x7FFFFFFFFFFFFFFFL;
> 
> The warnings tell me that the constant is too long for the datatype of 
> "hash". But when I count the digits of 0x7FFFFFFFFFFFFFFFL there are 
> exactly 16 which are equal to 64 bit. It doesn't helps either when I 
> change the datatype from __int64 to (unsigned) long long, so what could be 
> the reason for this warning?
> 
> Michael
> 
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> 
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> 



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