CG(3F)

NAME
     CG, SCG   -  EISPACK routine.  This subroutine calls the recommended
     sequence of subroutines from the eigensystem subroutine package (EISPACK)
     to find the eigenvalues and eigenvectors (if desired) of a COMPLEX
     GENERAL matrix.


SYNOPSYS
          subroutine  cg(nm,n,ar,ai,wr,wi,matz,zr,zi,fv1,fv2,fv3,ierr)

          integer          nm, n, matz, ierr
          double precision ar(nm,n), ai(nm,n), wr(n),  wi(n)
          double precision zr(nm,n), zi(nm,n), fv1(n), fv2(n), fv3(n)
          subroutine scg(nm,n,ar,ai,wr,wi,matz,zr,zi,fv1,fv2,fv3,ierr)

          integer          nm, n, matz, ierr
          real             ar(nm,n), ai(nm,n), wr(n),  wi(n)
          real             zr(nm,n), zi(nm,n), fv1(n), fv2(n), fv3(n)



DESCRIPTION
     On INPUT

     NM must be set to the row dimension of the two-dimensional array
     parameters as declared in the calling program dimension statement.

     N is the order of the matrix  A=(AR,AI).

     AR and  AI  contain the real and imaginary parts, respectively, of the
     complex general matrix.

     MATZ is an integer variable set equal to zero if only eigenvalues are
     desired.  Otherwise it is set to any non-zero integer for both
     eigenvalues and eigenvectors.  On OUTPUT

     WR and  WI  contain the real and imaginary parts, respectively, of the
     eigenvalues.

     ZR and  ZI  contain the real and imaginary parts, respectively, of the
     eigenvectors if MATZ is not zero.

     IERR is an integer output variable set equal to an error completion code
     described in section 2B of the documentation.  The normal completion code
     is zero.

     FV1 , FV2, and  FV3  are temporary storage arrays. Questions and comments
     should be directed to B. S. Garbow, APPLIED MATHEMATICS DIVISION, ARGONNE
     NATIONAL LABORATORY