_ORTRAN(3F)							   _ORTRAN(3F)

NAME    [Toc]    [Back]

     ORTRAN, SORTRAN  -	 EISPACK routine.  This	subroutine accumulates the
     orthogonal	similarity transformations used	in the reduction of a REAL
     GENERAL matrix to upper Hessenberg	form by	 ORTHES.

SYNOPSYS    [Toc]    [Back]

	  subroutine  ortran(nm, n, low, igh, a, ort, z)
	  integer	   nm, n, low, igh
	  double precision a(nm,igh), ort(igh),	z(nm,n)

	  subroutine sortran(nm, n, low, igh, a, ort, z)
	  integer	   nm, n, low, igh
	  real		   a(nm,igh), ort(igh),	z(nm,n)

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 the	balancing subroutine  BALANC.
     If	 BALANC	 has not been used, set	LOW=1, IGH=N.

     A contains	information about the orthogonal trans-	formations used	in the
     reduction by  ORTHES in its strict	lower triangle.

     ORT contains further information about the	trans- formations used in the
     reduction by  ORTHES.  only elements LOW through IGH are USED.  On	OUTPUT

     Z contains	the transformation matrix produced in the reduction by
     ORTHES.

     ORT has been altered. Questions and comments should be directed to	B. S.
     Garbow, APPLIED MATHEMATICS DIVISION, ARGONNE NATIONAL LABORATORY


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