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Date: Fri, 17 Sep 2004 01:46:33 -0400
From: Frank Warmerdam <warmerdam@pobox.com>
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To: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>,
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Subject: Re: [Tiff] BigTIFF Tag Value Count issue
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Bob Friesenhahn wrote:
>> Do you think that increasing the count to 8 bytes would be a problem 
>> in libTIFF?
> 
> 
> I don't have the libtiff knowledge to properly answer that.  If the 
> availability of a native 64-bit storage type can be assumed (pretty safe 
> if 32-bit processors are the new baseline) then it doesn't sound like an 
> 8 byte value would be a problem.

Bob,

This does raise an interesting question.  I would personally like libtiff
to continue working on platforms with no identifiable 64bit integer
data type if practical. Of course it would be fine if it only supported
files smaller than 4GB in this case.

Does anyone know if stuff like PDA's and such have efficient-to-use
64bit integer datatypes?  I am somewhat doubtful.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent

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