Re: [HACKERS] Warning!!

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От A James Lewis
Тема Re: [HACKERS] Warning!!
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Msg-id Pine.LNX.3.93.981104131603.18393C-100000@vr1-workhorse1.vrtx.net
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Ответ на Re: [HACKERS] Warning!!  ("Thomas G. Lockhart" <lockhart@alumni.caltech.edu>)
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Don't remove it... After all, I'm using this workaround in my software 
for now and it seems OK....

testdb=> select cash_mul_flt8('$1', '123.77');
cash_mul_flt8
-------------
$123.76      
(1 row)

testdb=> select cash_mul_flt8('$1', '123.77000001');
cash_mul_flt8
-------------
$123.77      
(1 row)

It happens in float4 too....


On Wed, 4 Nov 1998, Thomas G. Lockhart 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...
> 
>                  - Tom
> 

James (james@linuxrocks.co.uk)
Vortex Internet
My Windows unders~1 long filena~1, and yours?



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