an error calculation of cbrt

[Former user]

Originally reported on Google Code with ID 542

Steps to reproduce:
cbrt(210000)
   56.000(caculate wrong)
56^3
   175616
210000^(1/3)
   59.439(correct)

Expected behavior:
cbrt(210000)
   59.439(correct)

Experienced behavior:

Product version:
Version 0.10.1

Operating system:
Linux 3.12.21-gentoo i686 Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz GenuineIntel GNU/Linux

Additional Information:
attach is the screenshot 

Reported by hityixiaoyang on 2014-12-25 03:07:10

<hr> * Attachment: bug2.png<br>

[Former user]

Please note that it works as expected in version 0.11.

Reported by helder.pereira.correia on 2014-12-25 11:02:05 - Status changed: Duplicate - Merged into: #230