Hi Regina; Thank you for the explanations.
>________________________________ > Da: Regina Henschel >Hi Pedro, > >Pedro Giffuni schrieb: >> Hi; >> >> While digging around Calc I see some things that could be ordered better. >> >> One change that I am considering is moving RAND() to the >> Analysis scaddin and bringing the error erf() function in base Calc. >> >> This has reasons of course: in the case of RAND() I want it in the same >> file as RANDBETWEEN() so I can use them cleanly.. erf() is something >> I would consider doing with Boost, and I don't want to have to link boost >> into the scaddin for just one function. >> >> There are probably other changes that can be done too. Just wanted to make >> sure if there is some criteria to keep some function in or out of the base >> Calc >> or in a scaddin. > >Long time ago Addin was used for those functions which are not available in a >standard Excel installation, but need an addin installed in Excel. Another >reason for Addin has been, to show, how own functions can be defined without >integrating them directly into the interpreter (example ROT13). I have never >done such thing and do not know whether it still works. But there are two >issues about it, https://issues.apache.org/ooo/show_bug.cgi?id=101386 and >https://issues.apache.org/ooo/show_bug.cgi?id=98149 > >In the meantime Excel has moved the functions to the standard installation and >most of these functions are specified in ODF. Besides the task to give a way >to define own functions, there is no need for scaddin at all. > >So considering that all, I think, that at least all functions, which are >defined in ODF, should go to the normal sc. > OK, I don't really want to move things around very much, plus these things have to be done in careful order. I think I found a way to do what I need without moving things around so we will see. I do prefer to ask around before doing real changes so bear with me ;-). >I do not know, whether a move has any influence on opening old documents, >which do not use the ODF namespace oc. > >I do not understand your comment on erf. The function erf and erfc are moved >to rtl::math with https://issues.apache.org/ooo/show_bug.cgi?id=97091 > What I see is that we are keeping in rtl::math a lot of things that the system usually provides. It's good to have them there if they are going to be used in Addins but I am not sure the implementations are actually too good. In the case of erf, I think anything related to the Normal Distribution is absolutely critical and essential and I would have expected the implementation to be along with the other stats functions. TBH, I haven't even started to look at the stats stuff. I am very busy with other projects. >You are considering far-reaching changes. Therefore I suggest to speak with >Eike before doing it. > I am actually going very slow, I am surprised that no one had done these things already but then I only looked at this after the pain of updating the ancient boost we were carrying. Of course discussion with people that know this better is welcome and that's why I bring the subject to the public lists. I suspect Eike is reading and that he will chime in if he notices my sharp axe dangerously near his baby ;-). Pedro.
