c arithmetic implementation.

      %
      % A trivial example of plane creation and
      % decomposition. Create a plane via the definition
      % of a plane normal and constant, determine a
      % point in the plane.
      %
      plane_norm = [ 2.44; -5./3.; 11./9. ];
      const      = <a href="cspice_pi.html">cspice_pi</a>;

      %
      % Construct the SPICE plane.
      %
      plane = <a href="cspice_nvc2pl.html">cspice_nvc2pl</a>( plane_norm, const );

      %
      % Convert the plane to a no