| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Patrick Welche <prlw1(at)newn(dot)cam(dot)ac(dot)uk>, pgsql-hackers(at)postgresql(dot)org, pgsql-ports(at)postgresql(dot)org |
| Subject: | Re: Geometry test on NetBSD (was Re: [HACKERS] RC1?) |
| Date: | 2002-11-20 06:15:12 |
| Message-ID: | 28813.1037772912@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-ports |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Tom, can you clarify why -0 is valid.
The IEEE spec absolutely thinks that -0 and +0 are distinct entities.
I don't remember why, at one in the morning ... but if you insist I'm
sure that plenty sufficient numerical-analysis reasons can be produced.
The guys who wrote that spec knew what they were doing (that's why it's
been adopted so universally).
regards, tom lane
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