From: "Shmuel (Seymour J.) Metz" <nospam@gsg.eds.com>
Subject: Re: An interesting quote on Java and C++
Date: 1997/09/18
Date: 1997-09-18T00:00:00+00:00 [thread overview]
Message-ID: <34218E68.63D5@gsg.eds.com> (raw)
In-Reply-To: EGEq96.2H6@world.std.com
Robert A Duff wrote:
>
> How about integers? The Java standard nails down integers pretty
> precisely (exactly 8, 16, 32, and 64-bit arithmetic, with wraparound on
> overflow). Does anybody know whether Java implementations obey this?
> Are there any Java implementations on machines where the word size would
> make this inconvenient?
I don't know whether there are any Java implimentations for them, but
the
definitions of integers in Java would definitely be awkard for the old
Burroughs (now Unisys), GE/Honeywell (now BULL) and Univac (now Unisys);
not only are the word sizes of 36 and 48 bits not powers of 2, but some
of
those machines use ones-complement arithmetic (end-around carry.) I
assume
that the old CDC machines are not an issue; otherwise they would have
the
same problems.
Ada, of course, takes a much less machine-dependent definition of the
world; you define the precision of your variables in terms of the
application, not in terms of the word size of your computer or virtual
machine.
> - Bob
--
Shmuel (Seymour J.) Metz
Senior Software SE
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next prev parent reply other threads:[~1997-09-18 0:00 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-09-03 0:00 An interesting quote on Java and C++ Nasser
1997-09-03 0:00 ` Samuel Mize
[not found] ` <01bcb881$915526a0$d7000064@sim01.amst.co.at>
1997-09-03 0:00 ` Robert Munck
1997-09-05 0:00 ` Joachim Schroeer
1997-09-06 0:00 ` Robert Dewar
1997-09-24 0:00 ` Shmuel (Seymour J.) Metz
1997-09-08 0:00 ` Robert A Duff
1997-09-09 0:00 ` Robert Munck
1997-09-10 0:00 ` Robert A Duff
1997-09-10 0:00 ` Robert Munck
1997-09-11 0:00 ` Robert Dewar
1997-09-12 0:00 ` Robert A Duff
1997-09-18 0:00 ` Shmuel (Seymour J.) Metz [this message]
1997-09-19 0:00 ` Robert A Duff
1997-09-20 0:00 ` Robert Dewar
1997-09-20 0:00 ` Robert Dewar
1997-10-03 0:00 ` Robert I. Eachus
1997-09-20 0:00 ` Robert Dewar
1997-09-22 0:00 ` Robert A Duff
1997-09-12 0:00 ` Jon S Anthony
1997-09-10 0:00 ` Stephen Leake
1997-09-11 0:00 ` Roy Grimm
1997-09-12 0:00 ` Robert A Duff
1997-09-12 0:00 ` Jon S Anthony
1997-09-11 0:00 ` Robert Dewar
1997-09-12 0:00 ` Jon S Anthony
1997-09-12 0:00 ` Robert A Duff
-- strict thread matches above, loose matches on Subject: below --
1997-09-25 0:00 Marin David Condic, 561.796.8997, M/S 731-96
1997-09-25 0:00 ` Shmuel (Seymour J.) Metz
1997-09-26 0:00 ` Tucker Taft
1997-10-07 0:00 ` Robert I. Eachus
1997-11-19 0:00 ` Shmuel (Seymour J.) Metz
1997-10-08 0:00 Marin David Condic, 561.796.8997, M/S 731-96
1997-10-09 0:00 ` Shmuel (Seymour J.) Metz
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