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Subject: [OASIS Issue Tracker] Created: (OFFICE-2209) When are exactnumerical results required?

When are exact numerical results required?

                 Key: OFFICE-2209
                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2209
             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
          Issue Type: Bug
          Components: OpenFormula, OpenFormula Test Cases
    Affects Versions: ODF 1.2
            Reporter: Robert Weir 
             Fix For: ODF 1.2

Test case for TAN() currently is:


with an expected result of:


However a test case for LOG() is:

=LOG(8*8*8; 8)

with expected result of 3 (with no epsilon).

Is this intentional?  I suspect that few implementations are going to be optimized to produce exact results here.

Do we have a general rule here?  Shouldn't it be that any function that has a domain of real numbers should be allowed an epsilon on test results?  And only functions whose domain consists of the integers should be required to give exact results?

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