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Subject: Re: how to know sizeof(int)
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From: Ludovic Brenta <ludovic.brenta@insalien.org>
Date: Wed, 04 Aug 2004 21:06:06 +0200
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Date: 2004-08-04T21:06:02+02:00
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"Jean-Pierre Rosen" writes:
> "Evangelista Sami" a écrit dans le message de hello
>>
>> how can i know the result of a sizeof(int) (in C).
>> i did not find the approppriate stuffs in interfaces.C.
>>
> Interfaces.C.Int'Size/8
>
> Interfaces.C.Int is the same as C Int, but the Size attributes is in
> bits, not bytes (OK, I assume here that a byte is 8 bits :-).

Indeed, hidden assumptions are evil, and the Enlightened Ones use
System.Storage_Unit instead of just "8".  Somehow, "8" is too short to
type and read :)

> Note that sizeof is *not* a regular function (a regular function
> could not have a type as the parameter). It is handled very
> specially in the C compiler, therefore there is no way you could get
> to it from another language.

I suppose 'Size is also handled specially by Ada compilers, right?

-- 
Ludovic Brenta.