On Sat, 14 May 2016 04:53:54 +0200, Jan Rheinländer <jrheinlaender@gmx.de> said:
JR> Dear Vladimir, realsymbol is not my derived class. See JR> ginac/symbol.h ! Yes, and as far as I am aware there is no problem with realsymbol in GiNaC. Furthermore, in my own project (see the end of the email) I have successfully derived several new classes following the advise from the GiNaC tutorial. If you are looking for an assistance you need to provide a complete piece of software, including the full description of your derived class, which causes the issue. 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/