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From: Stephen Leake <stephen_leake@acm.org>
Newsgroups: comp.lang.ada
Subject: Re: Integer-Types
Date: 04 Oct 2004 21:23:50 -0400
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Date: 2004-10-04T21:23:50-04:00

"Rick Santa-Cruz" <rick_santa_cruz75@msn.com> writes:

> Hi,
> 
> the more I consider the details and play with the language, the more 
> questions come in my mind... sorry...
> 
> Is the following the same:
> type New_Int is range 1..1000000;
> type New_Int1 is new Integer range 1..1000000;

These are very similar. 

They will be different if Integer'last < New_Int'last; in that case,
the compiler will report a compile time error. 

They will have different base types if the base of Integer is 64 bits,
since New_Int will fit in 32 bits.

The only reason to derive an integer type from another integer type is
to ensure they have the same underlying representation.

-- 
-- Stephe