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microsoft / PowerToys

Windows system utilities to maximize productivity
MIT License
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In Power Toys Run Calculator Plugin tan(pi/2) is defined. #32576

Open meesam4687 opened 1 month ago

meesam4687 commented 1 month ago

Microsoft PowerToys version

0.80.1

Installation method

PowerToys auto-update

Running as admin

Yes

Area(s) with issue?

PowerToys Run

Steps to reproduce

Type tan(pi/2) in run image

✔️ Expected Behavior

tan(pi/2) to not do anything like it does for other undefined values like it does to 5/0

❌ Actual Behavior

It gives tan(pi/2) as 16331239353195400

Other Software

No response

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Jay-o-Way commented 1 month ago

Google shows something similar: image

meesam4687 commented 1 month ago

Google shows something similar: image

Screenshot_20240422_225746_Calculator The phone version gives domain error

htcfreek commented 1 month ago

@meesam4687 Can you describe when the input is incorrect? What numbers or mathematic rules are important here?

meesam4687 commented 1 month ago

@meesam4687 Can you describe when the input is incorrect? What numbers or mathematic rules are important here?

tan(pi/2) radians is not defined

and any odd multiple of pi/2 rad is not defined either. Example tan(pi/2) is not defined tan(3pi/2) is not defined tan(5pi/2) is not defined and so on.

pilgrimlyieu commented 4 weeks ago

This is not an issue of PowerToys Run Calculator. It's relevant to the representation of floating number (because Pi is an infinite non-recurring decimal, and it can't be stored exactly).

That means, due to floating point precision, it's not possible to obtain the exact value Pi/2, so the result is always finite.

You can use Python and NodeJS to get the similar result.

>>> from math import tan, pi
>>> tan(pi/2)
1.633123935319537e+16
> Math.tan(Math.PI/2)
16331239353195370

You can find more details in links below: