| 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: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Đặng Minh Hướng <kakalot49(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: NaNs in numeric_power (was Re: Postgres 11 release notes) |
| Date: | 2018-05-16 13:44:32 |
| Message-ID: | 496.1526478272@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-www |
Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> writes:
> On 15 May 2018 at 22:55, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Here's a proposed patch for that.
> In the case 1 ^ NaN = 1, what should the result scale be?
The result is exact, so I don't see a reason to be worried about its
scale. Messing with the scale would also require expending even
more code on what is, in the end, a corner case that no users have
expressed concern about.
regards, tom lane
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