| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Peter Eisentraut <peter_e(at)gmx(dot)net>, Casey Allen Shobe <cshobe(at)secureworks(dot)net>, Thomas Lockhart <lockhart(at)fourpalms(dot)org>, pgsql-bugs(at)postgreSQL(dot)org |
| Subject: | Re: Postgres storing time in strange manner |
| Date: | 2002-09-17 06:07:31 |
| Message-ID: | 21141.1032242851@sss.pgh.pa.us |
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| Lists: | pgsql-bugs pgsql-novice |
I said:
> I had success with this test:
BTW, some digging in the assembly code shows that the actual problem is
this: instead of emitting "x / 3600.0", with -ffast-math the compiler
emits the equivalent of "x * (double) (1.0 / 3600.0)". It's the
last-bit inaccuracy of the latter constant that's killing us.
regards, tom lane
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