Public bug reported:
The calculator incorrectly performs exponentiation if the base is
complex and the exponent is a positive integer. Under these conditions
the calculator exponentiates the real part of the base and leaves its
imaginary part intact, that does not agree with the complex numbers
operation rules. If the exponent is not a positive integer, the
calculation is performed correctly.
Steps to reproduce the bug:
1. Start the program.
2. Evaluate expression "i^2". The displayed result is "i".
3. Evaluate expression "(1+i)^2". The displayed result is "1+i".
4. Evaluate expression "(2+i)^2". The displayed result is "4+i".
Please find a quick fix patch attached. I did not study its
comprehensiveness and optimality, but it seems to work.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: gnome-calculator 1:3.16.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 5 22:59:29 2016
InstallationDate: Installed on 2014-09-29 (554 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: gnome-calculator
UpgradeStatus: Upgraded to wily on 2015-10-29 (159 days ago)
** Affects: gnome-calculator (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug wily
** Patch added: "complex-exponentiation.patch"
https://bugs.launchpad.net/bugs/1566513/+attachment/4625159/+files/complex-exponentiation.patch
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https://bugs.launchpad.net/bugs/1566513
Title:
Complex numbers are exponentiated incorrectly
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