From: | A James Lewis <james(at)vrtx(dot)net> |
---|---|
To: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | "Thomas G(dot) Lockhart" <lockhart(at)alumni(dot)caltech(dot)edu>, scrappy(at)hub(dot)org, darcy(at)druid(dot)net, pgsql-hackers(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] Warning!! |
Date: | 1998-11-04 14:57:52 |
Message-ID: | Pine.LNX.3.93.981104145654.26157A-100000@vr1-workhorse1.vrtx.net |
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Thread: | |
Lists: | pgsql-hackers |
It only happens here for some figues, not all.... mostly xx.x[1234]
On Wed, 4 Nov 1998, Bruce Momjian wrote:
> > > I'm very new to this list, and I have to first say that 6.4beta5 fixes
> > > every problem I had encountered with 6.3.2 (A small list..)
> > > Just now I saw and posted this...
> > > If the pence is 0-4 it rounds down... surely that's a rounding bug
> > > because it should be looking at the next significant figure?
> >
> > tgl=> select cash_mul_flt8('$123.77', '1');
> > cash_mul_flt8
> > -------------
> > $123.77
> > (1 row)
> >
> > tgl=> select cash_mul_flt8('$1', '123.77');
> > cash_mul_flt8
> > -------------
> > $123.76
> > (1 row)
> >
> > That's annoying; it's non-symmetric too. The money type is stored as an
> > integer, and the float type is an IEEE double; looks like we have an LSB
> > rounding problem. Not sure what to do about it other than remove the
> > function, which isn't desirable I'm sure...
>
> This is really bad. I can't imagine a 5-digit double is loosing
> rounding on a double. There must be some other problem, but I can't
> reproduce it here on BSD/OS.
>
> --
> Bruce Momjian | http://www.op.net/~candle
> maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
> + If your life is a hard drive, | 830 Blythe Avenue
> + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
>
James (james(at)linuxrocks(dot)co(dot)uk)
Vortex Internet
My Windows unders~1 long filena~1, and yours?
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