CORDIC vectoring: angle and length without a divide

Drag a point and watch CORDIC turn its vector down onto the x axis, step by step, reading off atan2 and the magnitude with shifts and adds.

This page sets no cookie and sends nothing anywhere.

Where the numbers come from

gHashTag/t27 specs/fpga/dsp/cordic.t27 (t27#8985): every value on the page is its fn bodies, compiled to wasm (logic.js)
J. E. Volder, The CORDIC trigonometric computing technique, IRE Trans. Electronic Computers EC-8(3), 1959
J. S. Walther, A unified algorithm for elementary functions, AFIPS Spring Joint Computer Conference, 1971