Re: [boost] Re: A pure C/C++ question

From: Victor A. Wagner, Jr. (vawjr_at_[hidden])
Date: 2002-08-22 11:40:14

At Thursday 2002/08/22 09:07, you wrote:
>From: "Victor A. Wagner, Jr." <vawjr_at_[hidden]>\
>
>
> > At Thursday 2002/08/22 01:23, you wrote:
[deleted]
> > >Everyone is forgetting that integer overflow on signed types results in
> > >undefined behaviour.
> >
> > This is an artifact of the language definition (a poor one, IMO).  When
>_I_
> > learned multiplication (way back when I was 6 or 7) I noticed pretty
>quick
> > that if I multiplied a n digit number by an m digit number I _might_ get
>an
> > m+n digit number.  The first several computers I worked on always
>produced
> > a "two word" product from two "one word" operands.  I was somewhat
> > disappointed to learn that the HLL's all seemed to ignore this "basic
>fact"
> > of mathematics.  <shrug> it's what we're stuck with, tho I still consider
> > it mostly intellectual laziness that led to it.  Especially with strongly
> > typed languages now.
>
>But every one of these languages has a max-sized integral type. Would you
>disallow
>
>     65536L * 3L
>
>in C++98?

no I wouldn't disallow it.
what I would do, depends on the maximum value that can be contained in a 
"long".

I'm one of those weirdos that thinks that "correct" is a lot more important 
than "fast".

>-Dave
>
>
>-----------------------------------------------------------
>            David Abrahams * Boost Consulting
>dave_at_[hidden] * http://www.boost-consulting.com
>
>
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Victor A. Wagner Jr.      http://rudbek.com
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