Hi Regina, On Tuesday, 2009-06-30 23:34:27 +0200, Regina Henschel wrote:
> Excel rounds down to integer. The comment in ODF spec 16.15.11 says that > Gnumeric allow fractional N, but my Gnumeric 1.6.3 rounds down too. In > the comment Kspread is said to allow fractional N, but I haven't got > that program. Just tried with KSpread 2.0rc1, it returns an error for fractional N. >> What is "large" and what is "long lasting"? > > I would have to implement it in C++ to see how long it really lasts. The > Basic macro lasts several seconds for x>10000. The effort is linear in x. Basic of course is some orders of magnitude slower than C++. > You are right to remember me to Boost, I have overlooked it. I had a > look at Boost now. The Bessel functions (and a lot of others) are > included in library "Math Toolkit" since version 1.35.0. I see version > 1.34.0 in OOo. There is a description in > http://www.boost.org/doc/libs/1_35_0/libs/math/doc/sf_and_dist/html/math_toolkit/special/bessel/bessel.html. > > > > > Having an actual version of the Boost library would solve a lot of other > accuracy problems too. I would prefer upgrading Boost library. Seems really the best option. > When can the upgrade be done? Don't know. I don't have time for it until OOo3.2, I'll try to ping Thorsten to see if he's willing, he already did the upgrade to 1.34; I just know he'll be on vaction soon, so it would take its time anyway. > Nevertheless, I can provide a patch with the Deuflhard algorithm likely > in time for OOo3.2 when give me a "go". Yes, of course, that would be nice. > BTW, I still need a decision on the UI name of the left tailed > F-distribution to finish that work. I have FDISTL in mind. Ah, I thought we already agreed on that, yes, I think FDISTL is fine. Thanks 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 e...@sun.com account, which I use for mailing lists only and don't read from outside Sun. Use er...@sun.com Thanks.
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