apesic / rpncalc Goto Github PK

Binary floating point math is imprecise when dealing with decimal numbers, for example 1.1 0.5 - is calculated as 0.6000000000000001. This could be solved if the numbers are represented as rational internally, because rational numbers use integer math.

This library, for example, provides computations on rational numbers.

I hope this won't be too much trouble to implement, and thank you for making this app :)

it will improve the interface. Also, it includes a wallpaper-based application color. And an automatic dark or light theme, based on the device settings.
right now your app is ugly compared to the alternatives.

I tried to solve 20 / (641 / 60) and calculated the part in brackets first: 641 enter 60 enter divide 20 enter switch divide

The result was 1.0, which is clearly not correct.

Is there a mistake here with the rounding?

I am using version 1.3.1.

Thank you for fixing the disappearing buttons (#1)!

But now I encounter another problem: I can only see two elements of the stack + the input line

May I suggest, that

• the font size in the stack is configurable
• the vertical padding of the buttons (and in the stack?) is configurable

If I could remove the vertical padding of the buttons, I could vertically shrink the keyboard and thus increasing the available vertical space for displaying the stack.

Links in the about page are not clickable

rpncalc version 1.2.0 from the fdroid, android 11

or periods or whatever the locale calls for

my phone don't have a lot of memory so background apps constantly gets killed. this causes issue with the calculator since when I switch back all the numbers entered are lost

Hello!

Some keys are missing when app is not running in fullscreen mode:

Pressing remove (appears after holding) on the active line crashes UI.

rpncalc version 1.2.0 from the fdroid, android 11

Hello,

I just created a GitHub account to give you some feedback on your application. I recently discovered it while searching for RPN calculators on F-Droid.

First, I have an issue with the bottom of the screen. The “Back/Home/Apps” bar of Android is overlapping the bottom of the view, making the 0, comma, Erase and Enter buttons smaller and hard to read. See picture bellow:

Second, you included a “1/X” button, but I would have preferred an exponent button. Inverse is pretty limiting, whereas exponent are often used, can cover roots… or even inverse. I know this is a bit nerdy, but I guess non-nerdy people don’t use RPN in the first place.

Otherwise, I think it’s a very elegant application. I really like the colour and size of the buttons, fonts are clean, you don’t feel overwhelmed like on some apps that try to emulate old HP calculators.

Stock Pixel 6. F-droid install v1.3.0.

1. Pressing the ± button changes a 36 to -3.6E1.
2. Any negative numbers generated by a calculation also display as exponents.

Thanks! Nice to see I'm not the only one who likes RPN!

Please consider adding support for Material You themed icons in android 13.

https://developer.android.com/develop/ui/views/launch/icon_design_adaptive

Some interesting observations:

1. You can achieve Infinity by entering any non-zero number, then pressing ^ret and × repeatedly
2. Infinity ^ret results in 0
3. Infinity Infinity × results in 0
4. ^any_number 0 ÷ crashes UI
5. pressing 9 ^ret yⁿ ^ret yⁿ results in a UI lockup
6. Infinity Infinity yⁿ does the same
7. You can achieve 0.00000000e+0 by pressing 1 ^ret 2 ^ret 1024 yⁿ ÷
8. You can achieve NaN by acquiring 0.00000000e+0 and pressing ^any_non_zero_number +
9. NaN has similar properties to Infinity
10. Infinity NaN - or + or ÷ results in NaN, but Infinity NaN × results in Infinity

Seems that it was caused by: #5

Very cool calculator BTW

rpncalc version 1.2.0 from the fdroid, android 11

10
30
exponent

results in ~9.22e18, not 10e30

Steps to reproduce:

• Press 1
• Press ↵
• Press 0
• Press ÷
• Press ÷ again
• Screen turn grey

Using the 1.2.0 version from F-Driod (https://f-droid.org/repo/dev.pesic.rpncalc_7.apk)

On smaller phones, the layout overflows the bottom of the display:

Thanks for the nice app.

Hey. It'd be cool if we had trigonometric functions, a square root key, logarithms, and maybe even things like permutations and combinations. I suppose the UI could take inspiration from the android calculator.

Basically I'm trying to calculate 2^(1/24),

but after this button press on the yˣ button,

the app freezes, and any subsequent button presses turns the whole screen grey.

It's a different story entirely with a simpler exponent like 2^(1/4)

Hello

App hangs up when dividing number ending in two zeroes by .4

Android version: 13
RPNcalc version: 1.3.1 (9)