Re: Bitmanipulation in Ada

["Ed Falis" <falis@verizon.net>]

On 18 Aug 2004 21:10:30 GMT, Bernd Specht <Bernd.Specht@gmx.com> wrote:

> Ok. Is there a reason why it is not (directly) available in the language
> itself like the and/or/xor or the >> and << in C?

Doesn't really matter, since most implementations directly generate the  
code for these (they treat them as "instrinsic").

>

> OK, but this would result in an assignment operation (a memory move on
> maschine code level). What I want is a real "overlay" (same storage  
> location
> used for both), so reading the value would not need extra instructions.

In all implementations of which I'm aware (and I've been in the Ada  
compiler business for over 20 years) no code would be generated for an  
unchecked conversion where the source and target have the same size.

You sound like you're looking for things to complain about, by the way.

- Ed



-- 
"When I was a kid, I wanted to grow up to be a wise man. Somehow, I just  
turned out to be a wise guy".