a question on basic types of interfaces.C

a question on basic types of interfaces.C

[evangeli]

hello,
there are some points regarding Interfaces.C that I want to be sure of
if I consider Interfaces.C and <limits.h> are the following assertions
always valid :

Interfaces.C.int'first = INT_MIN
Interfaces.C.int'last  = INT_MAX

Interfaces.C.short'first = SHRT_MIN
Interfaces.C.short'last  = SHRT_MAX

Interfaces.C.int'size = sizeof(int) * CHAR_BIT

thanks

Re: a question on basic types of interfaces.C

[Jacob Sparre Andersen]

<evangeli@cnam.fr> writes:

> there are some points regarding Interfaces.C that I want to be sure
> of if I consider Interfaces.C and <limits.h> are the following
> assertions always valid :
>
> Interfaces.C.int'first = INT_MIN
> Interfaces.C.int'last  = INT_MAX
>
> Interfaces.C.short'first = SHRT_MIN
> Interfaces.C.short'last  = SHRT_MAX
>
> Interfaces.C.int'size = sizeof(int) * CHAR_BIT

That's certainly how I read "Each of the types declared in
Interfaces.C is C-compatible.".

Greetings,

Jacob
-- 
<URL: small-talk://work/hallway-meeting/...>

Re: a question on basic types of interfaces.C

[Martin Krischik]

evangeli@cnam.fr schrieb:
> hello,
> there are some points regarding Interfaces.C that I want to be sure of
> if I consider Interfaces.C and <limits.h> are the following assertions
> always valid :
> 
> Interfaces.C.int'first = INT_MIN
> Interfaces.C.int'last  = INT_MAX
> 
> Interfaces.C.short'first = SHRT_MIN
> Interfaces.C.short'last  = SHRT_MAX
> 
> Interfaces.C.int'size = sizeof(int) * CHAR_BIT

If you use compatible compilers: yes. I might be nitpicking but if you 
use a 64 bit GNAT-Ada and try to combine it with 16 bit Watcom-C then 
the assertions won't be true.

32 bit GNAT-Ada and 32 bit Watcom-C do actually work - sort of.

Check the documentation of your Ada compiler for a list a compatible C 
compiler :-).

Martin