Is it black hat to write a program to cheat on tests? Because I wrote a program on a TI-84 for my Algebra courses in high school (2006-2008) that ran the quadra

Is it black hat to write a program to cheat on tests? Because I wrote a program on a TI-84 for my Algebra courses in high school (2006-2008) that ran the quadratic equation for me. And then I expanded it for my AP Physics course to take care of solving every equation I needed, from Newtonian motion to thermodynamics.