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ArcTan(x,y)?
04-05-2017, 12:07 PM
Post: #1
ArcTan(x,y)?
Is there a single function on the Prime to compute ArcTan(x,y)? I know the function below returns the correct values for the different quadrants but I'd like to use a built-in function if possible. I cant find anything on it in the manual.

Tom L

PHP Code:
arctanxy(xy)
begin
  local a
;
  if 
== 0 then
    
if == 0 then
      a 
:= 0;
    else
      
:= sign(y) * pi 2
    end
;
  else
    
:= atan(x);
    if 
0 then
      
if 0 then
        a 
:= pi;
      else
        
:= pi;
      
end;
    
end;
  
end;

  return 
a;

end

Tom L
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Messages In This Thread
ArcTan(x,y)? - toml_12953 - 04-05-2017 12:07 PM
RE: ArcTan(x,y)? - Joe Horn - 04-05-2017, 12:20 PM
RE: ArcTan(x,y)? - toml_12953 - 04-05-2017, 12:26 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 03:00 PM
RE: ArcTan(x,y)? - toml_12953 - 04-05-2017, 03:39 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 06:22 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 07:28 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 07:47 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 10:47 PM
RE: ArcTan(x,y)? - DrD - 04-06-2017, 10:27 AM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-06-2017, 03:22 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 07:33 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 07:53 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 08:10 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 09:17 PM
RE: ArcTan(x,y)? - jte - 04-05-2017, 09:08 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 09:42 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-05-2017, 10:38 PM
RE: ArcTan(x,y)? - KeithB - 04-05-2017, 10:41 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-06-2017, 03:30 PM
RE: ArcTan(x,y)? - Han - 04-06-2017, 03:53 PM
RE: ArcTan(x,y)? - JMB - 04-09-2017, 09:50 AM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-09-2017, 03:47 PM
RE: ArcTan(x,y)? - JMB - 04-09-2017, 08:00 PM
RE: ArcTan(x,y)? - KeithB - 04-06-2017, 02:38 PM
RE: ArcTan(x,y)? - StephenG1CMZ - 04-09-2017, 09:54 PM



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