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Subject: [OASIS Issue Tracker] Commented: (OFFICE-2630) YEARFRAC ambiguity

• From: OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>
• To: office@lists.oasis-open.org
• Date: Mon, 12 Apr 2010 13:58:15 -0400 (EDT)

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[ http://tools.oasis-open.org/issues/browse/OFFICE-2630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18368#action_18368 ]

Andreas Guelzow  commented on OFFICE-2630:
------------------------------------------

Dennis, do you mean that in the actual/actual case 2007/2/1 to 2008/3/1 should yield (334/365 + 61/366) ?

> YEARFRAC ambiguity
> ------------------
>
>                 Key: OFFICE-2630
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2630
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Bug
>          Components: OpenFormula
>    Affects Versions: ODF 1.2 Part 2 CD 1
>            Reporter: Robert Weir
>
> I thought we nailed this one a while ago, but I see the problem still in Part 2, CD 01.
> YEARFRAC is currently defined as "Computes the fraction of the number of years between a StartDate and EndDate.
> Basis is the system for determining how many days are in a month or year."
> OK.  So YEARFRAC is A/B where A= number of days between the two dates, using the counting conventions of the basis.  And B is what? A year certainly.  But how many days?  365?  365.25?  Dependent on whether date 1 or date 2 is in a leap year?
> I thought David figured this out at one point.

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