Bug 391860

Summary:	Compare floating point numbers properly in libkwineffects
Product:	[Plasma] kwin	Reporter:	Vlad Zahorodnii <vlad.zahorodnii>
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	kde.org, nate
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Vlad Zahorodnii 2018-03-14 17:45:21 UTC

WindowQuad, WindowQuadList, and WindowMotionManager use '==' to compare floating point numbers, this is completely wrong. 

Please note, we can't use qFuzzyCompare because it doesn't work if one of numbers is 0.

For reference, Boost's docs on floating point comparison.

http://www.boost.org/doc/libs/1_61_0/libs/math/doc/html/math_toolkit/float_comparison.html

Comment 1 kde.org 2021-11-06 20:13:13 UTC

Still present in KDE 5.24.