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https://issues.apache.org/jira/browse/IO-876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Samael Bate updated IO-876:
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Affects Version/s: 2.20.0
> FileUtils.byteCountToDisplaySize returns incorrect values
> ---------------------------------------------------------
>
> Key: IO-876
> URL: https://issues.apache.org/jira/browse/IO-876
> Project: Commons IO
> Issue Type: Bug
> Affects Versions: 2.8.0, 2.20.0
> Reporter: Samael Bate
> Priority: Major
>
> I get that there can be discrepancies depending on whether discussing GB or
> GiB but as commons-io has a constant for {{FileUtils.ONE_GB}} which is
> 1,073,741,824 I can presume that the value being returned by
> FileUtils.byteCountToDisplaySize should actually be an accurate GiB value,
> despite the text being just GB.
> So there's two problems here, the text saying MG, GB, etc should probably be
> formatted with the more correct text post-fixed (MiB, GiB, etc).
> However my main issue is that either way the results are just wrong. This
> seems to be caused by the function simply dropping the fractional digits
> rather than using any decimal places or rounding.
> For example 1.9 GB will get returned by this function as "1 GB":
> {code:java}
> FileUtils.byteCountToDisplaySize(2018148352L) // returns "1 GB" but is only
> just a little short of 2 GB{code}
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