[GiNaC-list] let_op() and index

[Chris Dams]

Dear Marco,

On Sat, 26 Feb 2005 mdias at ift.unesp.br wrote:

> and returns to be a indexed, not a covdiff object. there is a example to
> write a subs code like this?

The signature of your subs method is not correct. It should be
ex subs(const exmap & m, unsigned options = 0) const;
Examples of such methods can be found in some of the ginac/*.cpp files in
the GiNaC distribution. If you are on some flavour of unix, type

	grep ::subs *.cpp

to find out in which.

Best wishes,
Chris