| From: | Philip Warner <pjw(at)rhyme(dot)com(dot)au> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pete Forman <pete(dot)forman(at)westerngeco(dot)com> |
| Cc: | Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>, Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: floating point representation |
| Date: | 2001-02-20 23:02:06 |
| Message-ID: | 3.0.5.32.20010221100206.02e726b0@mail.rhyme.com.au |
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| Lists: | pgsql-hackers |
At 15:48 20/02/01 -0500, Tom Lane wrote:
>
>The existing default of FLT_DIG or DBL_DIG digits seems like a good
>general-purpose policy, but it doesn't meet all needs. For pg_dump,
>we clearly would like to promise exact dump and restore. On the
>other side, the geometry regress tests would like to suppress a few
>of the noisier low-order digits. And we frequently see questions from
>users about how they can display fewer digits than the system wants to
>give them --- or, more generally, format the output in some special
>form.
>
If I could add another 'nice-to-have' in here: the ability on a
per-attribute basis to specify the preferred output format. This could
apply to real, date, integer etc etc. Clearly not a 7.1 feature.
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