[GiNaC-devel] printing of class power

[Richard B. Kreckel]

Dear Stefan,

On 1/7/25 12:12 AM, Stefan Weinzierl wrote:
> I am not sure if one actually needs the extra method
> power::do_print_tree,
> a program seems to do the same thing with or without,

It is not the same, even when the exponent is not 1/2. Without it, we 
dispatch to power::do_print() which passes the 'print_tree' context down 
to basis and exponent and for x^5 that gives us something like:
                                                             x (symbol) 
@0x559db0cc2f70, serial=2, hash=0x6f41b8a, flags=0xf, domain=0
^                                                            5 (numeric) 
@0x559db0cb3c90, hash=0xa5fe3ba7, flags=0xf

(Note the caret and the indentation.) We really want to pick up 
basic::do_print_tree() here.

> and I don't see it defined in the classes add and mul neither.

The methods add::do_print_tree() and mul::do_print_tree() are registered 
in the classes' print dispatch tables (add.cpp:42 and mul.cpp:45).

All my best,
   -richy.
-- 
Richard B. Kreckel
<https://in.terlu.de/~kreckel/>