ANGLEDIFF Difference between two angles.

   Computes the signed angular difference between two angles in radians.
   The result is comprised between -PI and +PI.

   Example
     A = angleDiff(-pi/4, pi/4)
     A = 
         1.5708    % equal to pi/2
     A = angleDiff(pi/4, -pi/4)
     A = 
        -1.5708    % equal to -pi/2

   See also
   angles2d, angleAbsDiff

 ------
 Author: David Legland
 e-mail: david.legland@grignon.inra.fr
 Created: 2011-07-27,    using Matlab 7.9.0.529 (R2009b)
 Copyright 2011 INRA - Cepia Software Platform.

Package: matgeom