cslect.f3

!>
!> 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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