CRZT02 returns
      || I - Q'*Q || / ( M * eps)
 where the matrix Q is defined by the Householder transformations
 generated by CTZRZF.

M

          M is INTEGER
          The number of rows of the matrix AF.

N

          N is INTEGER
          The number of columns of the matrix AF.

AF

          AF is COMPLEX array, dimension (LDA,N)
          The output of CTZRZF.

LDA

          LDA is INTEGER
          The leading dimension of the array AF.

TAU

          TAU is COMPLEX array, dimension (M)
          Details of the Householder transformations as returned by
          CTZRZF.

WORK

          WORK is COMPLEX array, dimension (LWORK)

LWORK

          LWORK is INTEGER
          Length of WORK array. LWORK >= N*N+N.

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