Re: [GENERAL] Floating point error

At 2013-03-06 10:04:25 +0000, laurenz.albe@wien.gv.at wrote:
>
> How about this elaboration?

Sorry to nitpick, but I don't like that either, on the grounds that if I
had been in Tom Duffey's place, this addition to the docs wouldn't help
me to understand and resolve the problem.

I'm not entirely convinced that any brief mention of extra_float_digits
would suffice, but here's a proposed rewording:
   The  setting controls the   number of extra significant digits included when a floating point   value is converted to text for output. With the default value of   0, the output is portable to every platform   supported by PostgreSQL. Increasing it will produce output that   is closer to the stored value, but may be unportable.

It's a pretty generic sort of warning, but maybe it would help?

(I'm marking this "Waiting on author" in the CF.)

-- Abhijit