ER
          The leading dimension of the array TC.
          LDTC &gt;= MAX(1,M*K),      if LDBLK = 'C';
          LDTC &gt;= MAX(1,(M-1)*K),  if LDBLK = 'R'.

  TR      (input)  DOUBLE PRECISION array, dimension (LDTR,k)
          where k is (N-1)*L when LDBLK = 'C' and is N*L when
          LDBLK = 'R'.
          On entry with LDBLK = 'C', the leading K-by-(N-1)*L part
          of this array must contain the 2nd to the N-th blocks of
          the first block row of T.
          On entry with LDBLK = 'R