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  1. OASIS Open Document Format for Office Applications (OpenDocument) TC
  2. OFFICE-4005

Remove "non-negative integer" constraint - For all Bessel Functions

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: OpenFormula
    • Labels:
      None
    • Environment:

      as per 11/26/2018

       

    • Proposal:
      Hide

      Constrains: Evaluators may restrict the evaluation to integer values for the order N.

      Show
      Constrains: Evaluators may restrict the evaluation to integer values for the order N.

      Description

      The BESSELJ function ( section 6.16.13 in ODF1.3 draft) has the Constraints "N >= 0, INT(N)=N; Evaluators may evaluate expressions where N >= 0 returns a non-error value."

      But the order N need not be non-negative, there exists reflection formulae. And the order N need not be integer, fractional order, especially half-integer is used too.

      References:

      http://functions.wolfram.com/webMathematica/FunctionPlotting.jsp?name=BesselJ&ptype=3&n=1&z=1&threeDtype2=0&part2=0&free1=n&free2=z&Min1=-5&Max1=5&Min2=-5&Max2=5

      https://en.wikipedia.org/wiki/Bessel_function

      https://www.boost.org/doc/libs/1_48_0/libs/math/doc/sf_and_dist/html/math_toolkit/special/bessel/bessel.html

      https://stat.ethz.ch/R-manual/R-devel/library/base/html/Bessel.html

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            • Assignee:
              Unassigned
              Reporter:
              regina.henschel Regina Henschel
            • Watchers:
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              Dates

              • Created:
                Updated: