TESTING/EIG/zget36.f(3) Library Functions Manual TESTING/EIG/zget36.f(3)

TESTING/EIG/zget36.f


subroutine zget36 (rmax, lmax, ninfo, knt, nin)
ZGET36

ZGET36

Purpose:

 ZGET36 tests ZTREXC, a routine for reordering diagonal entries of a
 matrix in complex Schur form. Thus, ZLAEXC computes a unitary matrix
 Q such that
    Q' * T1 * Q  = T2
 and where one of the diagonal blocks of T1 (the one at row IFST) has
 been moved to position ILST.
 The test code verifies that the residual Q'*T1*Q-T2 is small, that T2
 is in Schur form, and that the final position of the IFST block is
 ILST.
 The test matrices are read from a file with logical unit number NIN.

Parameters

RMAX
          RMAX is DOUBLE PRECISION
          Value of the largest test ratio.

LMAX

          LMAX is INTEGER
          Example number where largest test ratio achieved.

NINFO

          NINFO is INTEGER
          Number of examples where INFO is nonzero.

KNT

          KNT is INTEGER
          Total number of examples tested.

NIN

          NIN is INTEGER
          Input logical unit number.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 84 of file zget36.f.

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