CSLECT returns .TRUE. if the eigenvalue Z is to be selected,


 otherwise it returns .FALSE.


 It is used by CCHK41 to test if CGEES successfully sorts eigenvalues,


 and by CCHK43 to test if CGEESX successfully sorts eigenvalues.


 The common block /SSLCT/ controls how eigenvalues are selected.


 If SELOPT = 0, then CSLECT return .TRUE. when real(Z) is less than


 zero, and .FALSE. otherwise.


 If SELOPT is at least 1, CSLECT returns SELVAL(SELOPT) and adds 1


 to SELOPT, cycling back to 1 at SELMAX.

Z

          Z is COMPLEX


          The eigenvalue Z.

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