_CBABK2(3F)							   _CBABK2(3F)

NAME    [Toc]    [Back]

     CBABK2, SCBABK2  -	 EISPACK routine.  This	subroutine forms the
     eigenvectors of a COMPLEX GENERAL matrix by back transforming those of
     the corresponding balanced	matrix determined by  CBAL.

SYNOPSYS    [Toc]    [Back]

	  subroutine  cbabk2(nm, n, low, igh, scale, m,	zr, zi)
	  integer	   nm, n, low, igh, m
	  double precision scale(n), zr(nm,m), zi(nm,m)

	  subroutine scbabk2(nm, n, low, igh, scale, m,	zr, zi)
	  integer	   nm, n, low, igh, m
	  real		   scale(n), zr(nm,m), zi(nm,m)

DESCRIPTION    [Toc]    [Back]

     On	INPUT

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

     N is the order of the matrix.

     LOW and IGH are integers determined by  CBAL.

     SCALE contains information	determining the	permutations and scaling
     factors used by  CBAL.

     M is the number of	eigenvectors to	be back	transformed.

     ZR	and ZI contain the real	and imaginary parts, respectively, of the
     eigenvectors to be	back transformed in their first	M columns.  On OUTPUT

     ZR	and ZI contain the real	and imaginary parts, respectively, of the
     transformed eigenvectors in their first M columns.	 Questions and
     comments should be	directed to B. S. Garbow, APPLIED MATHEMATICS
     DIVISION, ARGONNE NATIONAL	LABORATORY


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