*
* $Id: eisch3.F,v 1.1.1.1 1996/04/01 15:02:39 mclareni Exp $
*
* $Log: eisch3.F,v $
* Revision 1.1.1.1  1996/04/01 15:02:39  mclareni
* Mathlib gen
*
*
#include "gen/pilot.h"
      SUBROUTINE EISCH3(NM,N,AR,AI,RLB,RUB,MM,M,WR,ZR,ZI,IERR,WORK)
C     SOME EIGENVALUES AND CORRESPONDING EIGENVECTORS OF A COMPLEX
C     HERMITIAN MATRIX
C
      DIMENSION AR(NM,NM),AI(NM,NM),WR(MM),ZR(NM,NM),ZI(NM,NM),WORK(1)
      CALL HTRIDI(NM,N,AR,AI,ZI,WORK,WORK(N+1),WORK(2*N+1))
      EPS1=0.0
      CALL BISECT(N,EPS1,ZI,WORK,WORK(N+1),RLB,RUB,MM,M,WR,WORK(9*N+1),
     X IERR,WORK(4*N+1),WORK(5*N+1))
      IF(IERR.NE.0) RETURN
      IF(M.EQ.0) RETURN
      CALL TINVIT(NM,N,ZI,WORK,WORK(N+1),M,WR,WORK(9*N+1),ZR,IERR,
     X WORK(4*N+1),WORK(5*N+1),WORK(6*N+1),WORK(7*N+1),WORK(8*N+1))
      IF(IERR.NE.0) RETURN
      CALL HTRIBK(NM,N,AR,AI,WORK(2*N+1),M,ZR,ZI)
      RETURN
      END