float questions

[Ben Finney]

spiffy <dawodu4fun at yahoo.com> writes:

> after some calculations i have this number as a result...
> -7.1054273576010019e-015
>
> what does the 'e' mean? is this an error?

It indicates that this is a number represented with scientific
notation.

    <URL:http://en.wikipedia.org/wiki/Scientific_notation>

-- 
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Ben Finney