Hi Regina, On Monday, 2008-03-10 18:15:29 +0100, Regina Henschel wrote:
> significant digits. I looked around for some better coefficient and > found them in Apache Library > > Are we allowed to use this values? You mean to use only the coefficient values? I have no idea whether coefficient values could be copyrighted or fall under the same license the source code is licensed, and of course IANAL, so I can't give any legal advice. > The result would be excellent. If you compare in a Calc cell the values > calculated with GAMMALN with the directly calculated values (which is > possible for GAMMALN(n) and GAMMALN(n+0.5) with positive integer n) you > will get TRUE. Sounds nice, but ... Btw, do you happen to know the Cephes library? It also has gamma (didn't test, could you take a look at it?) among other nice algorithms, and is said to be numerically accurate, several other software products use it as well. See http://www.moshier.net/#Cephes I currently favour that library, it looks like it could solve our numerical stability problems, and maybe more. Unfortunately the license is somewhat unclear, respectively there's just a "may be used freely" statement. I'll get in contact with Steve and see whether we can arrange something for the legal department. Eike -- OOo/SO Calc core developer. Number formatter stricken i18n transpositionizer. SunSign 0x87F8D412 : 2F58 5236 DB02 F335 8304 7D6C 65C9 F9B5 87F8 D412 OpenOffice.org Engineering at Sun: http://blogs.sun.com/GullFOSS Please don't send personal mail to the [EMAIL PROTECTED] account, which I use for mailing lists only and don't read from outside Sun. Use [EMAIL PROTECTED] Thanks.
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