Re: Exactly the prblem, how do we make a known constant value static?

[James Rogers <jimmaureenrogers@worldnet.att.net>]

Petter Fryklund wrote:
> 
> Sure, my mistake. It would have been correct if we had been working on
> bytes, but still, how do we make a rep spec?
> 
> My_Array_Length : constant Integer :=  Integer ((Indices'Last -
> Indices'First + 1) * 4 * 8);
> 
> I'm not sure what Lutz meant by comment it out, it works, above. Wouldn't
> that depend on the implementation?

Lutz was saying to comment out the rep spec and simply pack the
array. That would work.

As far a portability, your solution is the one which depends upon
implementation. You are assuming that an Integer is 32 bits.
Using My_Array_Length := My_Array'Size is always poratable and
correct.

Remember that the Size attribute reports the number of BITS used
for a type or object, unlike the "sizeof" operator in C and C++
that reports the number of "bytes" with the definition of "bytes"
being implementation dependent.

Jim Rogers
Colorado Springs, Colorado USA