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From: bobduff@world.std.com (Robert A Duff)
Subject: Re: Portability of Arithmetic (was: Java vs Ada 95)
Date: 1996/10/17
Message-ID: <DzFC07.LMw@world.std.com>#1/1
X-Deja-AN: 190141186
references: <325D7F9B.2A8B@gte.net> <1996Oct15.174526.1@eisner>
 <DzDBw3.ILH@world.std.com> <326628B8.7724@gsfc.nasa.gov>
organization: The World Public Access UNIX, Brookline, MA
newsgroups: comp.lang.ada
Date: 1996-10-17T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <326628B8.7724@gsfc.nasa.gov>,
Stephen Leake  <Stephen.Leake@gsfc.nasa.gov> wrote:
>What if I'm doing some computations in Java that have intermediate
>values that need 33 bits?

In Java, you can use 'long', which is guaranteed to support exactly the
range -2**63..2**63-1, no more, no less.

>... In Ada, the compiler tells me when it can't do
>that.

So you port some code, and find that the compiler can't handle it.
So you have to rewrite a bunch of code.  Yuck.

- Bob