Re: [Dev-C++] How connect c++ to a database?

[Richard V. W. <ric...@ai...>]

1/x

When considering x approaching zero from the negative side (-x),
when we reach zero, 1/x becomes positive infinity.
because there is no -0.







Per Westermark <pw...@ia...>
Sent by: dev...@li...
15/02/2006 04:13 PM

 
        To:     "Daniel K. O." <dan...@ya...>
        cc:     Dev-Cpp UserList <dev...@li...>
        Subject:        Re: [Dev-C++] How connect c++ to a database?


And that is why I observed that limes 1/x reaches different values when x
reaches zero from positive and negative side, i.e. we either have to
conclude that +infinity is identical to -infinity, or we have to think of
1/0 as just "undefined". In short, thinking of 1/0 as infinity is a
simplification of the problem - my original point.

When talking about division by zero in software-development terms, the
IEEE 754 floating point standard defines:
+n/0 -> +infinity
-n/0 -> -infinity
0/0 -> not a number (NaN)

/Per W

On Wed, 15 Feb 2006, Daniel K. O. wrote:

> This is IMHO the relevant quote:
>
> "Division by zero must be left undefined in any mathematical system that
> obeys the axioms of a field
> <http://en.wikipedia.org/wiki/Field_%28mathematics%29>."
>
> ---
> Daniel K. O.




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