*     G07DBF Example Program Text
*     Mark 14 Revised. NAG Copyright 1989.
*     .. Parameters ..
      INTEGER          NIN, NOUT
      PARAMETER        (NIN=5,NOUT=6)
      INTEGER          NMAX
      PARAMETER        (NMAX=25)
*     .. Local Scalars ..
      DOUBLE PRECISION C, DCHI, H1, H2, H3, SIGMA, SIGSAV, THESAV,
     +                 THETA, TOL
      INTEGER          I, IFAIL, IPSI, ISIGMA, MAXIT, N, NIT
*     .. Local Arrays ..
      DOUBLE PRECISION RS(NMAX), WRK(NMAX), X(NMAX)
*     .. External Subroutines ..
      EXTERNAL         G07DBF
*     .. Executable Statements ..
      WRITE (NOUT,*) 'G07DBF Example Program Results'
*     Skip heading in data file
      READ (NIN,*)
      READ (NIN,*) N
      WRITE (NOUT,*)
      IF (N.LE.NMAX) THEN
         READ (NIN,*) (X(I),I=1,N)
         READ (NIN,*) IPSI, H1, H2, H3, DCHI, MAXIT
         WRITE (NOUT,*)
     +     '          Input parameters     Output parameters'
         WRITE (NOUT,*) 'ISIGMA   SIGMA   THETA   TOL    SIGMA  THETA'
   20    READ (NIN,*,END=40) ISIGMA, SIGMA, THETA, TOL
         SIGSAV = SIGMA
         THESAV = THETA
         IFAIL = 0
*
         CALL G07DBF(ISIGMA,N,X,IPSI,C,H1,H2,H3,DCHI,THETA,SIGMA,MAXIT,
     +               TOL,RS,NIT,WRK,IFAIL)
*
         WRITE (NOUT,99999) ISIGMA, SIGSAV, THESAV, TOL, SIGMA, THETA
         GO TO 20
      ELSE
         WRITE (NOUT,99998) 'N is out of range: N =', N
      END IF
   40 STOP
*
99999 FORMAT (1X,I3,3X,2F8.4,F7.4,F9.4,F8.4,I4)
99998 FORMAT (1X,A,I5)
      END