LAPACK 3.11.0
LAPACK: Linear Algebra PACKage

◆ zget36()

subroutine zget36 ( double precision  RMAX,
integer  LMAX,
integer  NINFO,
integer  KNT,
integer  NIN 
)

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
[out]RMAX
          RMAX is DOUBLE PRECISION
          Value of the largest test ratio.
[out]LMAX
          LMAX is INTEGER
          Example number where largest test ratio achieved.
[out]NINFO
          NINFO is INTEGER
          Number of examples where INFO is nonzero.
[out]KNT
          KNT is INTEGER
          Total number of examples tested.
[in]NIN
          NIN is INTEGER
          Input logical unit number.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.