Re: LO calc formulas

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On 11/12/2020 21:41, Dante Doménech wrote:
I've been digging into calc code. And it makes me wonder about a few things.
First, in here: core <https://opengrok.libreoffice.org/xref/core/>/include <https://opengrok.libreoffice.org/xref/core/include/>/rtl <https://opengrok.libreoffice.org/xref/core/include/rtl/>/math.hxx <https://opengrok.libreoffice.org/xref/core/include/rtl/math.hxx> We have our own isnan, isinf, isfinite, ... and some of them with quite strange code.
Why is the default c++ standard library isn't good enough?
The same goes for floor / ceil / round ...

Those include files that are part of the stable URE interface(*) have rather picky requirements. They are meant to be included by rather old (pre-C99, pre-C++11) compilers, and changes to their content likely cause incompatible changes to the stable URE interface. I would avoid modifications of those files without a clear need and without a solid understanding of the implications.

* For a list of all the C/C++ include files that make up the stable URE interface see workdir/CustomTarget/odk/allheaders/allheaders.hxx generated by `make CustomTarget_odk/allheaders`.

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