examples of customized printf

examples of customized printf

[Basile Starynkevitch]

Hello all,,


For the RefPerSys project (see http://refpersys.org/ and code on 
https://github.com/RefPerSys/refpersys-in-c/ ....) we need several 
examples of


      Customizing |printf|


We want %V to print RpsValue_t ( intptr_t, when odd it is a tagged 
integer, when even and non-null it is a valid pointer to some struct).


Examples of customizing printf for GNU guile could be enough.



Happy new year 2022.


NB. I also dream of finding European partners for RefPerSys within some 
HorizonEurope consortium. Then contact me by email (perhaps at office, 
CEA LIST, to basile.starynkevitch@cea.fr)

-- 
Basile Starynkevitch<basile@starynkevitch.net>
(only mine opinions / les opinions sont miennes uniquement)
92340 Bourg-la-Reine, France
web page: starynkevitch.net/Basile/

Re: examples of customized printf

[Adhemerval Zanella]

On 28/12/2021 07:31, Basile Starynkevitch wrote:
> Hello all,,
> 
> 
> For the RefPerSys project (see http://refpersys.org/ and code on https://github.com/RefPerSys/refpersys-in-c/ ....) we need several examples of
> 
> 
>      Customizing |printf|
> 
> 
> We want %V to print RpsValue_t ( intptr_t, when odd it is a tagged integer, when even and non-null it is a valid pointer to some struct).
> 
> 
> Examples of customizing printf for GNU guile could be enough.
> 
> 
> 
> Happy new year 2022.

You can reference glibc own manual [1] on how to customize the printf.  Keep
in mind this is a gnu extension.

[1] https://www.gnu.org/software/libc/manual/html_node/Customizing-Printf.html