http://forwhoallvglhpsx6dhycfb4fu4a2lqkvxtwlivruw765qxofyns7wqd.onion/home.php
Getting basic math working was simple, but polar & rectangular coordinates was a nightmare! Even the trigonometry functions didn't neatly reverse themselves for a while, when using degrees. Then finally, I added exponential imaginary numbers, maintained code for php 8, and it is probably finished stopwatch.php - Stopwatch after reading about iphone stopwatch reaching a record of 10,000 hours, I was eager to create a stopwatch of my own.