GNU bug report logs - #75994
"seq -w" is broken for large enough numbers

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From: Alexey Dobriyan <adobriyan <at> gmail.com>
To: Pádraig Brady <P <at> draigbrady.com>
Cc: 75994 <at> debbugs.gnu.org
Subject: bug#75994: "seq -w" is broken for large enough numbers
Date: Sat, 1 Feb 2025 23:34:31 +0300

On Sat, Feb 01, 2025 at 08:01:18PM +0000, Pádraig Brady wrote:
> With -w seq will use long doubles internally,
> which usually have a 64 bit significand.
> I.e. once you go above 2^64, you get approximations of integers.
> 
> Now we could adjust seq to use the "ASCII" increment method
> in this case by handling leading zeros appropriately.
> It would be good to know your use case here though,
> as to know how common this issue might be.

The usecase is using GNU seq as reference implementation. :^)

I'd do decimal fixed point. Given that seq only does addition
it won't be that bad.

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