From: Bruce Partridge 

I work on embedded systems.  The chip I am programming now is brand new,
and my C gives me a 16 bit long.  Embedded systems are a bit of a special
case, but C is very popular for embedded programmers.

Bruce Partridge
http://www.rebreather.ca

-----Original Message-----
From: c-bounces{at}snippets.org [mailto:c-bounces{at}snippets.org]On Behalf Of
Pascal.Schmidt!1.153.401.2{at}filegate.net
Sent: Monday, November 17, 2003 3:01 PM To: c{at}snippets.org
Subject: Re: [C] word sizes


Hi Bob! :-)

 BS> I have, OTOH, heard of a couple of architectures where you
 BS> couldn't necessarily count on shorts being 16 bits or longs being 32
 BS> bits. Ints, of course, are all over the map. Fortunately, the days of
 BS> those architectures are, like the days of one's complement math,
 BS> mostly history.
Ahem, gcc on 64 bit machines uses a model where longs are 64 bits (LP64, longs
and pointers are 64 bit, int is 32 bit). On 32 bit machines, it uses the ILP32
model; meaning int, long, and pointers are 32 bits.

Or did you mean a long could be less than 32 bits on some old oddball machine?

 BS> Excellent point - but, as you point out, not explicitly stated nor
 BS> immediately obvious.
Even if a char were represented as, say, 64 bits, the actual value could always
be 255 or less, with EOF being represented by a value greater than 255.

Ciao
Pascal

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