From: "Pascal Obry" <p.obry@der.edf.fr>
Subject: Re: Ada or C++ acting 'correctly' here?
Date: 1999/03/02
Date: 1999-03-02T00:00:00+00:00 [thread overview]
Message-ID: <7bg7pi$fgf$1@cf01.edf.fr> (raw)
In-Reply-To: 7bg0pc$5a4$1@ffx2nh3.news.uu.net
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Willliam V a �crit dans le message <7bg0pc$5a4$1@ffx2nh3.news.uu.net>...
>500000000*7 is a negative quantity. C++ prints out
>what you ask it to do.
>try unsigned long l = 500000000*7;
>cout << l;
>or even
>cout << ((unsigned long )500000000)*7);
>If Linux 'd make the unsigned long to be 64 bit, you Ada would
>have compiled fine. So the Ada compiler you are using is
>relying very heavily on the underlying C machinery. Don't be
>too fast to blame C or C++
Certainly not. What does it means anyway that "your Ada compiler is
relying on the underlying C machinery" ????
It is just that the Ada compiler rely on the underlying architecture, how
could it be otherwise anyway !
The 32 bits or 64 bits attributes are coming from the architecture not
from the C compiler. So the only thing we know now is that a machine
word (in this example) is 32 bits.
And now again, Ada pay attention to that but C/C++ does not.
Pascal.
next prev parent reply other threads:[~1999-03-02 0:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-27 0:00 Ada or C++ acting 'correctly' here? bill
1999-02-27 0:00 ` Matthew Heaney
1999-02-27 0:00 ` Gautier.DeMontmollin
1999-02-27 0:00 ` Florian Weimer
[not found] ` <36e8e201.48455851@netnews.worldnet.att.net>
1999-03-18 0:00 ` bglbv
1999-02-27 0:00 ` Claudius Proculus
1999-02-27 0:00 ` Biju Thomas
1999-02-28 0:00 ` robert_dewar
1999-02-28 0:00 ` Florian Weimer
1999-03-01 0:00 ` dewar
1999-02-27 0:00 ` Steve Doiel
1999-02-28 0:00 ` William McKenzie
1999-03-01 0:00 ` Hubert B. Keller
1999-03-01 0:00 ` fraser
1999-02-28 0:00 ` robert_dewar
1999-03-02 0:00 ` Willliam V
1999-03-02 0:00 ` robert_dewar
1999-03-02 0:00 ` SpamSpamSpam
1999-03-02 0:00 ` Pascal Obry [this message]
1999-03-02 0:00 ` Gautier.DeMontmollin
1999-03-02 0:00 ` kvisko
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