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From: ohk@tfdt-o.nta.no (Ole-Hjalmar Kristensen FOU.TD/DELAB)
Subject: Re: How big is an int? (was: Yet another stupid language war (was:
 ... the only languages you need!!))
Date: 1997/11/07
Message-ID: <umq90v1ugga.fsf@fabula4-atm.nta.no>#1/1
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References: <34557f2b.1934172@news.mindspring.com>
 	<63anc7$75p$1@darla.visi.com> <345947D2.D20EF8E9@horvath.com>
 	<345F49A2.5F5DC5A0@aom.ericsson.se> <63oadj$ljc$1@helios.crest.nt.com>
 <w0b4t5r428o.fsf@mah21awm.i-have-a-misconfigured-system-so-shoot-me>
Organization: Telenor Online Public Access
Newsgroups: 
 comp.lang.ada,comp.lang.c,comp.lang.c++,comp.lang.java.advocacy,comp.lang.c,comp.lang.c++
Date: 1997-11-07T00:00:00+00:00
List-Id: <comp.lang.ada>


nospam@spam.com writes:

> kaz@helios.crest.nt.com (Kaz Kylheku) writes:
> 
> > 
> > In article <345F49A2.5F5DC5A0@aom.ericsson.se>,
> > Ted Lyngmo  <qhslyng@aom.ericsson.se> wrote:
> > >Bob Horvath wrote:
> > >> 
> > >> Hmmmm.  How big is an int?
> > >
> > >As I've understood it, an int has two legal sizes. A short has only one,
> > 
> > You haven't understood it.
> > 
> > A short is large enough to represent numbers in the range -32767 to
> > 32767. An int is also large enough to represent numbers in the
> > same range. A long can represent numbers in the range -2147483647
> > to +2147483647. 
> 
> Nor have you. The definitions are as follows.
> 
> short <= int <= long
> short < long
> short > char
> 

Yes, but it is also explicitly stated that 
"The values below are acceptable minimum magnitudes; larger values may
be used.

...
INT_MAX         +32767
INT_MIN         -32767
LONG_MAX        +2147483647L
LONG_MIN        -2147483647L
...
SHRT_MAX         +32767
SHRT_MIN         -32767
"

So what you say used to be true, but isn't any more.

> If your system does not conform to this, it isn't ISO (I thinhk it was ISO)
> compliant.
> 
> What you stated above is true for (I would assume) all 32bit systems. It
> will not necessarily hold for 64 bit or 128 bit systems.
>

It holds for all systems, else it's not standard C.
 
> I even had one person in the past try and tell me that when Intel went to
> 64bits, that M$ was going to have:
> 
>   short = 2 bytes
>   long  = 4 bytes
>   int   = 8 bytes
> 
> <rofl>
> 
> /Mike