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Message from discussion Question about platform independent code and ANSI C compliant code
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Richard Heathfield  
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 More options Jun 3 2010, 6:50 am
Newsgroups: comp.programming
From: Richard Heathfield <r...@see.sig.invalid>
Date: Thu, 03 Jun 2010 11:50:35 +0100
Local: Thurs, Jun 3 2010 6:50 am
Subject: Re: Question about platform independent code and ANSI C compliant code
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bart.c wrote:

<snip>

> It seems reasonable to be able to request 'a' to be exactly 16-bits on
> any machine, whether that is natural for the architecture on not.

I'm not entirely convinced that that /is/ a reasonable request. It is
perfectly reasonable to ask for it to be *at least* 16 bits.

How, precisely, would you implement your exactly-16-bit type on a
machine whose natural word size is 64? Such a machine does exist, and C
implementations for it have to jump through all kinds of crazy hoops to
give programmers the 8-bit char they expect. I would not like to be the
one to tell the compiler team "well done lads, but now there's this
bloke on Usenet who wants 16-bit short ints..."

--
Richard Heathfield <http://www.cpax.org.uk>
Email: -http://www. +rjh@
"Usenet is a strange place" - dmr 29 July 1999
Sig line vacant - apply within


 
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