https://bugs.kde.org/show_bug.cgi?id=488613
Bug ID: 488613
Summary: tan(π / 2) does not return undefined in radian mode
Classification: Applications
Product: kcalc
Version: 24.05.0
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: evan.te...@gmail.com
Reporter: misawalac...@seznam.cz
Target Milestone: ---
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SUMMARY
Inputting tan(π / 2) into KCalc does not return a correct value.
You can get pi in the Constants>Mathematics dropdown, which is what I used.
STEPS TO REPRODUCE
1. Set input mode to RAD
2. Input tan(pi / 2)
3. Press enter to calculate the result
OBSERVED RESULT
KCalc returns -6,05546978455e+12
EXPECTED RESULT
KCalc should return "undefined" or nan or some other value indicating there is
no result.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: openSUSE Tumbleweed, KDE Plasma 6
(available in About System)
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
ADDITIONAL INFORMATION
Entering tan(90) in the degree mode seems to return nan like it should, so
maybe this is a rounding error?
Desmos, Photomath and Wolframalpha return correct values.
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