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From: Robert Wessel <robertwessel2@yahoo.com>
Newsgroups: comp.lang.c++,comp.lang.ada
Subject: Re: Why use C++?
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Date: Fri, 12 Aug 2011 00:16:23 -0500
Xref: g2news1.google.com comp.lang.c++:82835 comp.lang.ada:20552
Date: 2011-08-12T00:16:23-05:00
List-Id: <comp.lang.ada>

On Fri, 12 Aug 2011 00:02:55 -0500, "Randy Brukardt"
<randy@rrsoftware.com> wrote:

>"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
>news:1d8wyhvpcmpkd.ggiui9vebmtl.dlg@40tude.net...
>> On Wed, 10 Aug 2011 17:37:28 -0500, Randy Brukardt wrote:
>>
>>> There are uses for wrapping types, but they are far less likely than 
>>> wanting
>>> overflow detection. The default should be to catch errors, not turn them
>>> into different ones.
>>
>> The OP mentioned image processing, the behavior frequently needed there is
>> saturated integer arithmetic, which is nether ranged nor modular.
>
>I'm not familar with any hardware on which saturated integer arithmetic is 
>provided. If it was, I would expect direct language support for it (which 
>need not require new kinds of types).


Many DSPs, graphics coprocessors and the like have saturating integer
arithmetic, usually in addition to conventional arithmetic.  x86 has
saturating integer vector instructions as well, dating back to MMX
(PADDUSW, for example)..