HAH! Hey, how about a Univac SolidState-80 (circa 1959)? 5000 bi-quint words! Can we code for that? Stu ( :-P )
________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steven Michalske Sent: Wednesday, July 30, 2008 8:38 PM To: avr-gcc List Subject: Re: [avr-gcc-list] 24 bit Integer what about a PDP 8 or PDP 15, could we not code for it? being 12 and 18 bit machines? Steve On Jul 30, 2008, at 8:36 AM, Dave Hansen wrote: From: [EMAIL PROTECTED] > 2008/7/14 Weddington, Eric <[EMAIL PROTECTED]>: > > A 24-bit integer is not supported by the C language. In theory, support > > could be added to GCC, but then it would be considered an extension to > > the C language. And it would also be difficult and/or time-consuming to > > add to GCC. > > The C standard doesn't dictate the size of any integer type, except that char > must be large enough to hold the environments standard character set and > the size of any larger types is ordered as you'd expect. > char <= short <= int <= long Also that short and int must be able to represent at least -32767 to +32767, and long must be able to represent +/-2,147,483,647. So int24_t would have to be a special type outside the standard types. And I think (though I'm not certain) that it would have to be promoted to long before any operator could be applied. Some of that would be mitigated by the as-if rule, of course... > int is typically the natural word size for the architecture, but often on 8 bit > micros it will be larger (since char typically provides an 8 bit int anyway.) It's larger because an 8 bits can't represent the required range of values. Regards, -=Dave ________________________________ Time for vacation? WIN what you need. Enter Now! <http://www.gowindowslive.com/summergiveaway/?ocid=tag_jlyhm> _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
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