code: public static void multA_u( final int blockLength ,
                                  final DSubmatrixD1 A ,
                                  final DSubmatrixD1 V ,
                                  int row )
      {
          int heightMatA = A.row1-A.row0;
  
          for( int i = row+1; i < heightMatA; i++ ) {
  
              double val = innerProdRowSymm(blockLength,A,row,A,i,1);
  
              V.set(row,i,val);
          }
      }
docs: <p>
  Multiples the appropriate submatrix of A by the specified reflector and stores
  the result ('y') in V.<br>
  <br>
  y = A*u<br>
  </p>
  
  @param blockLength
  @param A Contains the 'A' matrix and 'u' vector.
  @param V Where resulting 'y' row vectors are stored.
  @param row row in matrix 'A' that 'u' vector and the row in 'V' that 'y' is stored in.