Dear All, It seems there is indeed an issue with archiving zeta2, since both versions has the same name (it may be similar issues with other overloaded function names). I do not know what is zeta, but I am attaching a patch fixing it. To have the same printout of the function as before, a new function zeta2_print_dflt() has to be introduced. Best wishes, Vladimir -- Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu Software: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter: https://github.com/vvkisil/MoebInv-notebooks

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On Tue, 31 Mar 2020 04:42:05 +0000, Feng Feng <f.feng@outlook.com> said:

FF> Hi all, FF> I came across a problem about the archive and unarchive on FF> functions with a variable number of arguments. for example, the FF> following c++ code produces the output: zeta(10,x) :> FF> 1/93555*Pi^10. it seems that the unarchive just return FF> zeta(10). FF> Best regards! Feng FF> //--- FF> symbol x("x"); ex zx = zeta(10,x); FF> archive ar_out; ar_out.archive_ex(zx, "zx"); ofstream FF> out("tmp.gar"); out << ar_out; out.close(); FF> lst syms = {x}; archive ar_in; ifstream in("tmp.gar"); in >> FF> ar_in; in.close(); FF> cout << zx << " :> " << ar_in.unarchive_ex(syms,"zx") << FF> endl; FF> //--- _______________________________________________ GiNaC-list FF> mailing list GiNaC-list@ginac.de FF> https://www.ginac.de/mailman/listinfo/ginac-list