Re: (*) -> 1

[Andreas Eder]

On Mi 18 Jan 2023 at 15:07, Óscar Fuentes <ofv@wanadoo.es> wrote:

> Michael Heerdegen <michael_heerdegen@web.de> writes:
>
>> Óscar Fuentes <ofv@wanadoo.es> writes:
>>
>>> Even a programmer can't assume that associativity and commutativity
>>> can be used on a long, finite, sum.
>>
>> As long as it's a sum, of course can a programmer assume that.
>
> Of course not! Otherwise your numerical simulation can go very wrong :-)
>
> (hint: numbers in computers are approximate, adding small numbers to
> large numbers is a bad idea.)

Only floating point numbers. Integers are exact and in lisps like elisp
there is no artificial size limit.

'Andreas