How to detect a double's significant digits

[Grant Edwards]

On 2005-05-05, mrstephengross <mrstephengross at hotmail.com> wrote:
>>This doesn't look like Python to me.  Are you sure you're on the right
> newsgroup?
>
> Er, ok, I'm an idiot. This was all supposed to be on
> comp.lang.c++, but obviously I posted on the wrong one. Sorry
> for all the hassle. In python, this stuff is a heck of a lot
> easier.

No, it isn't.  The question is equally meaningless in any
language.

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