[MATH-1555] Wrong declaration of ATan2 class

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0
• Flags: Patch, Important
• Assignee: Unassigned
• Reporter: Laurent Galluccio
• Created: 07/Oct/20 10:02
• Updated: 08/Oct/20 14:50
• Resolved: 08/Oct/20 14:50

Description

If i check the content of ATan2 class, the value method is coded like this 

public double value(double x, double y)

{ return FastMath.atan2(x, y); }

with 

x Abscissa for which the function value should be computed.

y Ordinate for which the function value should be computed.

 

But the FastMath.atan2 method is declared like this 

/**

• Two arguments arctangent function
• @param y ordinate
• @param x abscissa
• @return phase angle of point (x,y) between {@code -PI} and {@code PI}
  */
  public static double atan2(double y, double x) 

 

Which means that ordinate and abscissa are inverted. This should be fixed.