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Message #10801
[Bug 1566513] Re: Complex numbers are exponentiated incorrectly
Thanks for submitting the patch. I talked to the gnome-calculator
developer and he is probably doing a 3.18.4 release within the next week
or so that will include your patch. Let's wait for that before uploading
to Ubuntu 16.04 LTS.
** Bug watch added: GNOME Bug Tracker #759439
https://bugzilla.gnome.org/show_bug.cgi?id=759439
** Also affects: gnome-calculator via
https://bugzilla.gnome.org/show_bug.cgi?id=759439
Importance: Unknown
Status: Unknown
** Changed in: gnome-calculator (Ubuntu Xenial)
Status: New => Triaged
** Changed in: gnome-calculator (Ubuntu Xenial)
Importance: Undecided => Low
** Changed in: gnome-calculator (Ubuntu)
Importance: Undecided => Low
** Changed in: gnome-calculator (Ubuntu Yakkety)
Importance: Undecided => Low
** Changed in: gnome-calculator (Ubuntu Yakkety)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1566513
Title:
Complex numbers are exponentiated incorrectly
Status in GNOME Calculator:
Unknown
Status in gnome-calculator package in Ubuntu:
Fix Committed
Status in gnome-calculator source package in Xenial:
Triaged
Status in gnome-calculator source package in Yakkety:
Triaged
Bug description:
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)
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