code: public static boolean computeHouseHolderRow( final int blockLength, final DSubmatrixD1 Y,
                                                   final double[] gamma, final int i) {
          double max = BlockHouseHolder_DDRB.findMaxRow(blockLength,Y,i,i+1);
  
          if( max == 0.0 ) {
              return false;
          } else {
              // computes tau and normalizes u by max
              double tau = computeTauAndDivideRow(blockLength, Y, i,i+1, max);
  
              // divide u by u_0
              double u_0 = Y.get(i,i+1) + tau;
              VectorOps_DDRB.div_row(blockLength,Y,i,u_0,Y,i,i+1,Y.col1-Y.col0);
  
              gamma[Y.row0+i] = u_0/tau;
  
              // after the reflector is applied the column would be all zeros but be -tau in the first element
              Y.set(i,i+1,-tau*max);
          }
          return true;
      }
docs: <p>
  Computes the householder vector from the specified row
  </p>
  
  <p>
  The householder vector 'u' is computed as follows:<br>
  <br>
  u(1) = 1 <br>
  u(i) = x(i)/(&tau; + x(1))<br>
  </p>
  
  The first element is implicitly assumed to be one and not written.
  
  @return If there was any problems or not. true = no problem.