SUBROUTINE ALCON1 (FY,N,X,XW,TAU,TAUMIN,TAUMAX,EPS,INFO,
     &   RWORK,LRWORK,IWORK,LIWORK)
C*    Begin Prologue ALCON1
      IMPLICIT DOUBLE PRECISION(A-H,O-Z)
      EXTERNAL FY
      DIMENSION RWORK(LRWORK),IWORK(LIWORK),X(N),XW(N),INFO(9)
C
C---------------------------------------------------------------------
C
C*  Title
C
C     (Al)gebraic system of equations (Con)tinuation method.
C
C*  Written by        P. Deuflhard, P. Kunkel
C*  Purpose           Solution of parameter dependent systems of 
C                     nonlinear equations.
C*  Method            Numerical pathfollowing with automatic steplength 
C                     control
C*  Category          F4 - Parameter Dependent Nonlinear Equation 
C                          Systems
C*  Keywords          Numerical pathfollowing, Homotopy Method
C*  Version           0.9
C*  Revision          September 1985
C*  Latest Change     January 1991
C*  Library           CodeLib
C*  Code              Fortran 77, Double Precision
C*  Environment       Standard Fortran 77 environment on PC's,
C                     workstations and hosts.
C*  Copyright     (c) Konrad-Zuse-Zentrum fuer
C                     Informationstechnik Berlin (ZIB)
C                     Takustrasse 7, D-14195 Berlin-Dahlem
C                     phone : + 49/30/84185-0
C                     fax   : + 49/30/84185-125
C*  Contact           Lutz Weimann
C                     ZIB, Division Scientific Computing, 
C                          Department Scientific Software
C                     phone : + 49/30/84185-185
C                     fax   : + 49/30/84185-107
C                     e-mail: weimann@zib.de

The distribution contains the following files:

  alcon1.f         the solver
  alcon1.nrm       output of the example
  linalg_alcon1.f  linear algebraic routines (deccon,solcon)
  main_alcon1.f    main example program
  plthm.f          plot subroutine plthm for diagram data 
                   generated by alcon1
  main_plthm.f     sample driver for plthm 
  makefile         makefile for compilation
  readme           this file
  zibconst.f       machine dependant constants