Bug 465565

Summary:	When manipulating bits in numeral systems mode, kcalc switches from signed to unsigned display.
Product:	[Applications] kcalc	Reporter:	farmboy0
Component:	general	Assignee:	Johannes <joha4270>
Status:	RESOLVED FIXED
Severity:	normal	CC:	gabriel.barrantes.dev
Priority:	NOR
Version First Reported In:	22.08.3
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:	https://invent.kde.org/utilities/kcalc/-/commit/11748ab4a51debdc5738625da783a4710b61f293	Version Fixed/Implemented In:
Sentry Crash Report:

Description farmboy0 2023-02-10 23:09:48 UTC

SUMMARY
***
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***

STEPS TO REPRODUCE
1. switch to numeral systems mode
2. switch base to decimal
3. enter a negative number i.e. -300
4. click one of the 64 bit fields

OBSERVED RESULT
Clicking bit 8 will show: 18446744073709551188

EXPECTED RESULT
Showing the result as a signed number

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Gentoo/KDE 5.26.5
(available in About System)
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION

Comment 1 Johannes 2025-06-23 14:33:48 UTC

Git commit 11748ab4a51debdc5738625da783a4710b61f293 by Johannes Elgaard.
Committed on 23/06/2025 at 14:14.
Pushed by gabrielbarrantes into branch 'master'.

Bit manipulation now works with negative numbers

Changed KCalcBitset operate on signed integers, so that manipulating
bits of negative numbers does not cause a sudden change to a huge
positive number.

M  +1    -1    kcalc.cpp
M  +1    -1    kcalc.h
M  +3    -3    kcalc_bitset.cpp
M  +4    -4    kcalc_bitset.h

https://invent.kde.org/utilities/kcalc/-/commit/11748ab4a51debdc5738625da783a4710b61f293