ArcTan(x,y)?

[StephenG1CMZ]

(04-05-2017 12:26 PM)toml_12953 Wrote:  

(04-05-2017 12:20 PM)Joe Horn Wrote:  ARG((x,y)) = ARG(x+y*i) is like ATAN(y/x) but it respects the quadrants better than ATAN.

Wow! Thanks, Joe! You always answer so quickly, you must have a small parish to have this much time for the calculators!

Tom L

However, unlike ATAN2, ARG will not always work

Code:




 ATAN2_UNUSEDYX(YY,XX) 
 BEGIN //MY ATAN2
  IF XX==0 AND YY==0 THEN
   RETURN 0; //CONVENIENT;
  END;
  //-π..π 
  RETURN ARG(XX+*YY);//BUILT-IN HANDLES MOST
// the heiroglyphic is imaginary i
 END;