Re: babel C, C++, D enhancement

[tsd@tsdye.com (Thomas S. Dye)]

Aloha Thierry,

How about a user-customizable variable with a default value of
2147483647?

All the best,
Tom

Thierry Banel <tbanelwebmin@free.fr> writes:

> Hi Achim.
>
> You are right, INT_MAX is the C++ constant to compare to.
> It is defined in limits.h
>
> I'm not sure I want to locate limits.h (where is it ? are there several
> versions ?),
> and parse it, all from within Emacs-lisp...
> And this will have to be done for all languages (Python, Perl, Java, and
> so on),
> not just C++.
>
> Or we could assume that INT_MAX is always 2147483647.
> (Which of course is not true).
>
> Not so easy...
>
> Regards
> Thierry
>
> Le 16/06/2014 20:28, Achim Gratz a écrit :
>> Thierry Banel writes:
>>> So Babel C++ may cause problem for large integers.
>>> I am not sure how we can fix this in any case.
>> You'd need to know INT_MAX and give an error for larger values or use an
>> integral type that is large enough to handle Emacs' integer (which would
>> most likely be necessary for any Emacs that uses wide integer).
>>
>>> In the meantime, we can force large values to be declared as doubles by
>>> adding dot zero
>>> like this:
>>>
>>> #+BEGIN_SRC C++ :var large=9876543210 .0
>>> printf ("%g", large);
>>> #+END_SRC
>> That will lose precision, so it may not be the right thing either.
>>
>>
>> Regards,
>> Achim.
>
>
>

-- 
Thomas S. Dye
http://www.tsdye.com