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Re: Warning with 64-Bit datatype
- From: Vincent Torri <torri at math dot u-strasbg dot fr>
- To: Michael Pfeiffer <pfeiffer at swac dot de>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Thu, 15 Jul 2004 10:18:33 +0200 (MEST)
- Subject: Re: Warning with 64-Bit datatype
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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