Nonsensical attempt to avoid "funnily rounded" float numbers in RosettaStats.asPercentage()

[Abel Deuring]

It seems that the method RosettaStats.asPercentage() tries to avoid output of strings like 3.2999999999999998 by converting a float value into a string and then into a float value again. This is nonsesne. The core of this method as a one-liner in the Python shell:

>>> float(str(round((float(33)/1000)*100, 2)))
3.2999999999999998

Values like 3.3 can never be precisely represented as a binary float value.

If we want a more readable display of such values, callsites should format the value like so:

    '%1.2f' % 3.3

Or we let the method return strings directly.

[Launchpad QA Bot (lpqabot)]

Fixed in stable r12469 <http://bazaar.launchpad.net/~launchpad-pqm/launchpad/stable/revision/12469>.