*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->IRIX man pages -> complib/CH (3)              
Title
Content
Arch
Section
 

Contents


_CH(3F)								       _CH(3F)


NAME    [Toc]    [Back]

     CH, SCH -	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
     HERMITIAN matrix.

SYNOPSYS    [Toc]    [Back]

	  subroutine  ch(nm,n,ar,ai,w,matz,zr,zi,fv1,fv2,fm1,ierr)
	  integer	    nm,	n, matz, ierr
	  double precision ar(nm,n), ai(nm,n), w(n)
	  double precision zr(nm,n), zi(nm,n), fv1(n), fv2(n), fm1(2,n)

	  subroutine sch(nm,n,ar,ai,w,matz,zr,zi,fv1,fv2,fm1,ierr)
	  integer	    nm,	n, matz, ierr
	  real		   ar(nm,n), ai(nm,n), w(n)
	  real		   zr(nm,n), zi(nm,n), fv1(n), fv2(n), fm1(2,n)


DESCRIPTION    [Toc]    [Back]

     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 hermitian 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

     W contains	the eigenvalues	in ascending order.

     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  FM1  are temporary	storage	arrays.	Questions and comments
     should be directed	to B. S. Garbow, APPLIED MATHEMATICS DIVISION, ARGONNE
     NATIONAL LABORATORY


									PPPPaaaaggggeeee 1111
[ Back ]
 Similar pages
Name OS Title
REBAKB IRIX EISPACK routine. This subroutine forms the eigenvectors of a generalized SYMMETRIC eigensystem by back transfo
REBAK IRIX EISPACK routine. This subroutine forms the eigenvectors of a generalized SYMMETRIC eigensystem by back transfo
QZVAL IRIX EISPACK routine. This subroutine is the third step of
QZIT IRIX EISPACK routine. This subroutine is the second step of
TRED3 IRIX EISPACK routine. This subroutine reduces a REAL
IMTQLV IRIX EISPACK routine. This subroutine is a variant of IMTQL1.
CBAL IRIX EISPACK routine. This subroutine is a complex version of BALANCE.
BALANC IRIX EISPACK routine. This subroutine balances a REAL matrix and isolates eigenvalues whenever possible.
TINVIT IRIX EISPACK routine. This subroutine finds those eigenvectors of a TRIDIAGONAL SYMMETRIC matrix corresponding to s
TRIDIB IRIX EISPACK routine. This subroutine finds those eigenvalues of a TRIDIAGONAL SYMMETRIC matrix between specified b
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service