CalculaThreeDS

A scientific calculator homebrew written in C++17 for the 3DS Interace

Interface

The interface is split between 4 parts:

Memory on the top screen, up to 12 calculations can be remembered and copied back to the working board
Input area on the bottom screen, where what you type will appear, using a custom pretty-printing system (freely sized fractions, exponents, and square roots)
Keyboard panel selector on a black background
Touch keyboard with all the inputs you will ever need!

Controls

Intuitive touch keyboard with 3 panels:

basic input, for operations and digits
functions (don't forget to put parentheses after!)
user variables (10 of them) and user functions (3, TODO) with an assignment (arrow) sign that can appear anywhere in a calculation The D-PAD and touchscreen let you move the cursor after you typed things out The B button or delete key will remove content And finally, the A button or equals key will launch the calculation

Credits

LiquidFenrir for writing the application devkitPro for devkitARM and libctru/libcitro3d/libcitro2d which allowed me to make this run Wikipedia article on the Shunting-Yard algorithm/Reverse Polish Notation for interpreting the calculations