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Fwd: [Bug 685963] Re: Calculating failure rates and total precision error of rounding

 

Hi, I send you the zip file screen capture that solicitastes.

Thanks again


---------- Forwarded message ----------
From: Jas(OpenERP) <685963@xxxxxxxxxxxxxxxxxx>
Date: Thu, Dec 9, 2010 at 5:26 AM
Subject: [Bug 685963] Re: Calculating failure rates and total
precision error of rounding
To: rogerzavala@xxxxxxxxx


Hello Roger Zavala,

I have checked your bug specification at my end but problem does not
get reproduced at my end.
Would you please provide more information with proper steps or screen-shots?

Thanks.

** Changed in: openobject-server
      Status: New => Incomplete

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https://bugs.launchpad.net/bugs/685963

Title:
 Calculating failure rates and total precision error of rounding


** Attachment added: "ErrorOpenERP.zip"
   https://bugs.launchpad.net/bugs/685963/+attachment/1761886/+files/ErrorOpenERP.zip

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https://bugs.launchpad.net/bugs/685963

Title:
  Calculating failure rates and total precision error of rounding

Status in OpenObject Server:
  Incomplete

Bug description:
  At this time, OpenERP works, but I found a peculiar problem. This is
the scenario, creating a budget:

Tax: 12.5%

Product: XYZ
Product Price: 50.00
Product Size: 1.00 

That is: Real World:  50.00 * 1.00 = 50.00, in OpenERP 50.00 * 1.00 = 50.15$

Later
But the SubTotal is 5.90
Tax Total: 5.90
Total: 56.05

Equal, in the Real World the tax 50.15$ * 0.125 (%) = 6.27$ in OpenERP  50.15$ * 0.125 (%) = 5.90$!!!!!!


It makes no sense that if a product costs $ 50.00 per item, the subtotal of $ 50.15 for a single (1) piece. Still less, that the error is propagated with a tax of 12.5% giving a total tax of $ 5.90. To that end, the total of all the calculation of $ 56.05.

Some of the comments argue that users should adjust prices to go even "square" in quotes, values. This is absolute nonsense, taking into account the great responsibility that must have ERP software in the reliability of its results and operations.

Please, should you make any adjustment of the code? It is an irreparable error? What is the strategy recommended to resolve the situation?





References