Floating point problem

[Souvik Dutta]

Hmmm sorry please forgive me. I only did that because the question was
relevant. Please forgive me. Sorry again.

Souvik flutter dev

On Sat, Apr 18, 2020, 7:52 PM DL Neil via Python-list <
python-list at python.org> wrote:

> On 19/04/20 1:51 AM, Souvik Dutta wrote:
> > I literally tried it!!! And it did not stop because I did not get any
> > 1.0 rather I got 0.99999999999 But why does this happen. This is a
> > simple math which according to normal human logic should give perfect
> > numbers which are not endless. Then why does a computer behave so
> > differently?
>
> Please don't top-post - (human) conversations are normally question
> followed by answer, not the other way around!
>
> Computers use binary, not decimal - asked and answered (see previous
> first response, below)
>
>
> > On Sat, 18 Apr, 2020, 7:02 pm DL Neil via Python-list,
> > <python-list at python.org <mailto:python-list at python.org>> wrote:
> >
> >     On 19/04/20 1:07 AM, Souvik Dutta wrote:
> >      > I have one question here. On using print(f"{c:.32f}") where c=
> >     2/5 instead
> >      > of getting 32 zeroes I got some random numbers. The exact thing is
> >      > 0.40000000000000002220446049250313
> >      > Why do I get this and not 32 zeroes?
> >
> >     Approximating decimal numbers as binary values.
> >
> >     Do NOT try this at home! How many lines will the following code
> display
> >     on-screen?
> >
> >       >>> v = 0.1
> >       >>> while v != 1.0:
> >     ...     print(v)
> >     ...     v += 0.1
> >
> >     As an exercise, try dividing 1.0 by 10.0 and then adding the result
> to
> >     itself ten times.
> >
> >     Back in the ?good, old days, a Computer Science course would almost
> >     certainly involve some "Numerical Analysis", when such issues would
> be
> >     discussed. Not sure that many institutions offer such, these days...
> >     --
> >     Regards =dn
> >     --
> >     https://mail.python.org/mailman/listinfo/python-list
> >
>
> --
> Regards =dn
> --
> https://mail.python.org/mailman/listinfo/python-list
>