*     G05THF Example Program Text
*     Mark 22 Release. NAG Copyright 2006.
*     .. Parameters ..
      INTEGER          NOUT
      PARAMETER        (NOUT=6)
      INTEGER          MSEED, MSTATE, N, LR
      PARAMETER        (MSEED=1,MSTATE=633,N=20,LR=1)
*     .. Local Scalars ..
      DOUBLE PRECISION P
      INTEGER          GENID, I, IFAIL, LSEED, LSTATE, M, SUBID
*     .. Local Arrays ..
      DOUBLE PRECISION R(LR)
      INTEGER          SEED(MSEED), STATE(MSTATE), X(N)
*     .. External Subroutines ..
      EXTERNAL         G05KFF, G05THF
*     .. Executable Statements ..
      WRITE (NOUT,*) 'G05THF Example Program Results'
      WRITE (NOUT,*)
*     Set the distribution parameter P
      P = 0.999D0
      M = 60
*     Initialize the seed
      SEED(1) = 1762543
*     GENID and SUBID identify the base generator
      GENID = 1
      SUBID = 1
*     Initialize the generator to a repeatable sequence
      LSTATE = MSTATE
      LSEED = MSEED
      IFAIL = 1
      CALL G05KFF(GENID,SUBID,SEED,LSEED,STATE,LSTATE,IFAIL)
      IF (IFAIL.NE.0) THEN
         WRITE (NOUT,99998) IFAIL
         GO TO 20
      END IF
*     Generate the variates
*     Choose MODE = 3 because P close to 1
      IFAIL = 1
      CALL G05THF(3,N,M,P,R,LR,STATE,X,IFAIL)
      IF (IFAIL.NE.0) THEN
         WRITE (NOUT,99997) IFAIL
         GO TO 20
      END IF
*     Display the variates
      WRITE (NOUT,99999) (X(I),I=1,N)
*
   20 CONTINUE
*
99999 FORMAT (1X,I12)
99998 FORMAT (1X,' ** G05KFF returned with IFAIL = ',I5)
99997 FORMAT (1X,' ** G05THF returned with IFAIL = ',I5)
      END