CSJ2K.j2k.wavelet.analysis.SubbandAn.assignL2Norm C# (CSharp) Method

        private void assignL2Norm(float l2n)
        {
            if (l2Norm < 0)
            {
                // We are not finished with this element yet
                if (isNode)
                {
                    // We are on a node => search on childs
                    if (subb_LL.l2Norm < 0f)
                    {
                        subb_LL.assignL2Norm(l2n);
                    }
                    else if (subb_HL.l2Norm < 0f)
                    {
                        subb_HL.assignL2Norm(l2n);
                    }
                    else if (subb_LH.l2Norm < 0f)
                    {
                        subb_LH.assignL2Norm(l2n);
                    }
                    else if (subb_HH.l2Norm < 0f)
                    {
                        subb_HH.assignL2Norm(l2n);
                        // If child now is done, we are done
                        if (subb_HH.l2Norm >= 0f)
                        {
                            l2Norm = 0f; // We are on a node, any non-neg value OK
                        }
                    }
                    else
                    {
                        // There is an error! If all childs have non-negative
                        // l2norm, then this node should have non-negative l2norm
                        throw new System.InvalidOperationException("You have found a bug in JJ2000!");
                    }
                }
                else
                {
                    // This is a leaf, assign the L2-norm
                    l2Norm = l2n;
                }
            }
            else
            {
                // This is an error! The assignL2Norm() method is never called on
                // an element with non-negative l2norm
                throw new System.InvalidOperationException("You have found a bug in JJ2000!");
            }
        }

 /// <summary> Assigns the given L2-norm to the first leaf that does not have an
 /// L2-norm value yet (i.e. l2norm is negative). The search is done
 /// recursively and in the same order as that of the calcBasisWaveForms()
 /// method, so that this method is used to assigne the l2norm of the
 /// previously computed waveforms.
 ///
 /// <p>This method can not be called on an element that ahs a non-negative
 /// value in l2Norm, since that means that we are done.</p>
 ///
 /// </summary>
 /// <param name="l2n">The L2-norm to assign.
 ///
 /// </param>
 private void  assignL2Norm(float l2n)
 {
     if (l2Norm < 0)
     {
         // We are not finished with this element yet
         if (isNode)
         {
             // We are on a node => search on childs
             if (subb_LL.l2Norm < 0f)
             {
                 subb_LL.assignL2Norm(l2n);
             }
             else if (subb_HL.l2Norm < 0f)
             {
                 subb_HL.assignL2Norm(l2n);
             }
             else if (subb_LH.l2Norm < 0f)
             {
                 subb_LH.assignL2Norm(l2n);
             }
             else if (subb_HH.l2Norm < 0f)
             {
                 subb_HH.assignL2Norm(l2n);
                 // If child now is done, we are done
                 if (subb_HH.l2Norm >= 0f)
                 {
                     l2Norm = 0f;                             // We are on a node, any non-neg value OK
                 }
             }
             else
             {
                 // There is an error! If all childs have non-negative
                 // l2norm, then this node should have non-negative l2norm
                 throw new System.ApplicationException("You have found a bug in JJ2000!");
             }
         }
         else
         {
             // This is a leaf, assign the L2-norm
             l2Norm = l2n;
         }
     }
     else
     {
         // This is an error! The assignL2Norm() method is never called on
         // an element with non-negative l2norm
         throw new System.ApplicationException("You have found a bug in JJ2000!");
     }
 }