[Tutor] Float precision untrustworthy~~~
Kent Johnson
kent37 at tds.net
Wed Mar 30 20:38:56 CEST 2005
Jacob S. wrote:
> I've already deleted the recent thread--
>
> But sometimes I agree with he who said that you can't trust floats at all.
>
> The scientific theory suggests that if an output is not what it should
> be, then the hypothesis is untrue.
> In this case, the hypothesis is the fact that float division should
> always produce the same output as our decimal division used in common
> schools today. Since that is not always true, then floats are not
> trustworthy~~~
No, you should conclude that the hypothesis is untrue - that in fact float division does not produce
the same output as decimal division - and look for a new hypothesis. Like, maybe that float division
is a close approximation of exact decimal division that has some well-known limitations.
Kent
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