Hi Mark.

Yes it is CORDIC. You are pushing one value down to
zero and two others are becoming magnitude and angle.
It's easy to search altavista for details.

WBR Dmitry.



> I'm working on a compass project where I have two magneto resistive sensors
> connected to a couple PIC analog inputs.  This effectively generates a sin
> and cos value for the angle of the magnetic field.  What is the trig,
> CORDIC, or whatever function that I need to use to turn the sin and cos
> value into a single angle value?
>
> Thanks. Mark P

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