| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> |
| Cc: | Yugo NAGATA <nagata(at)sraoss(dot)co(dot)jp>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Numeric x^y for negative x |
| Date: | 2021-08-05 16:04:39 |
| Message-ID: | 2394813.1628179479@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> writes:
> On Thu, 22 Jul 2021 at 16:19, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> wrote:
>> Thanks for looking. Barring any further comments, I'll push this in a few days.
> So I have been testing this a lot over the last couple of days, and I
> have concluded that the patch works well as far as it goes, but I did
> manage to construct another case where numeric_power() loses
> precision. I think, though, that it would be better to tackle that as
> a separate patch.
It looks like castoroides is not happy with this patch:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=castoroides&dt=2021-08-01%2008%3A52%3A43
Maybe there's some hidden C99 dependency in what you did?
Although pademelon, which is one of our other pre-C99
dinosaurs, doesn't seem to be unhappy.
regards, tom lane
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