Simple calculation error

Francois Liot fliot at kyriba.com
Fri Jan 4 20:07:19 CET 2008


No the change of sign is due to a fake copy and past,
My question was related to decimal calculation.

Thanks,

Francois Liot

-----Original Message-----
From: python-list-bounces+fliot=kyriba.com at python.org [mailto:python-list-bounces+fliot=kyriba.com at python.org] On Behalf Of Paul McGuire
Sent: Friday, January 04, 2008 1:46 PM
To: python-list at python.org
Subject: Re: Simple calculation error

On Jan 4, 12:30 pm, Fredrik Lundh <fred... at pythonware.com> wrote:
> Francois Liot wrote:
>
> > I observed a strange calculation answer, on both python 2.3.4 and 2.4.4
>
> >> >> print 753343.44 - 753361.89
>
> > -18.4500000001
>
> >> >> print ( (753361.89*100) - (753343.44*100) ) / 100
>
> > 18.45
>
> > Can somebody help me to play correctly with decimal values?
>

If the OP is questioning the change in sign, the operands are reversed
in the second statement.

-- Paul
-- 
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