Re: Interfacing to C and long long data type

[Maciej Sobczak <see.my.homepage@gmail.com>]

On 25 Cze, 18:55, Keith Thompson <ks...@mib.org> wrote:

> You can declare
>
>     type C_Long_Long is range -2**63 .. 2**63-1;

GNAT already defines Interfaces.Integer_64, so I guess I can use that
as well. I was not sure if it would be fully legal to do so.
Considering the fact that representation of integers in C is largely
left to the implementation, any interoperability is achieved only with
the assumption that the compiler does the right thing, but with GNAT
and the C part compiled with gcc, this should be the case.

> > Similar issue exists with long long double.
>
> Not really, because there is no "long long double" type in C or C++.

Right. I wonder where I got that from. :-)

--
Maciej Sobczak * www.msobczak.com * www.inspirel.com