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Subject: [OASIS Issue Tracker] (OFFICE-4005) Remove "non-negative integer" constraint from BESSELJ function
[ https://issues.oasis-open.org/browse/OFFICE-4005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=72180#comment-72180 ] Andreas Guelzow commented on OFFICE-4005: ----------------------------------------- Gnumeric currently allows N to be any non-negative number (i.e. it need not be an integer.) e.g. =besselj(0.89,0.89) evaluates to 0.456188 Â Â > Remove "non-negative integer" constraint from BESSELJ function > -------------------------------------------------------------- > > Key: OFFICE-4005 > URL: https://issues.oasis-open.org/browse/OFFICE-4005 > Project: OASIS Open Document Format for Office Applications (OpenDocument) TC > Issue Type: Improvement > Components: OpenFormula > Reporter: Regina Henschel > Priority: Minor > > 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] -- This message was sent by Atlassian JIRA (v7.7.2#77003)
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