Re: How to convert a string containing two hex digits to a character?

["Hibou57 (Yannick Duchêne)" <yannick_duchene@yahoo.fr>]

On 11 jan, 16:53, Adam Beneschan <a...@irvine.com> wrote:
> I don't see this is a flaw.  It's a reminder that a Float, on any
> computer, in any language, is actually limited to a subset of rational
> numbers, which means you need to exercise some caution when using
> them.  Programmers who think "Float" can represent any real number,
> and that arithmetic on them is just like doing arithmetic on real
> numbers, are going to get into trouble, so it doesn't seem like a good
> thing to hide "the nature of Float as a model".
>
> Anyway, Float'Succ was not present in Ada 83 but was added in Ada 95,
> so someone must have thought it was useful for some practical purpose.
>
>                                -- Adam

While I agree with Dimitry Pred and Succ on Float are mostly a strange
idea, I agree Float (computer floats) and reals are not the same.

Just to give a good example about, a Python methods associated to
Float : float.as_integer_ratio(), which is defined as :
> Return a pair of integers whose ratio is exactly equal to the original float
> and with a positive denominator. Raises OverflowError on infinities and a
> ValueError on NaNs.
Found here : http://docs.python.org/library/stdtypes.html

Funny to apply this on Pi :P

Yes, Floats are a special things, they are not reals, although this
can be formalized