C********************************************************************* 
 
      SUBROUTINE RLUSET(LFN,MOVE) 
 
C...Purpose: to read a state of the random number generator from a file 
C...for subsequent generation from this state onwards. 
      COMMON/LUDATR/MRLU(6),RRLU(100) 
      SAVE /LUDATR/ 
      CHARACTER CHERR*8 
 
C...Backspace required number of records (or as many as there are). 
      IF(MOVE.LT.0) THEN 
        NBCK=MIN(MRLU(6),-MOVE) 
        DO 100 IBCK=1,NBCK 
        BACKSPACE(LFN,ERR=120,IOSTAT=IERR) 
  100   CONTINUE 
        MRLU(6)=MRLU(6)-NBCK 
      ENDIF 
 
C...Unformatted read from unit LFN. 
      NFOR=1+MAX(0,MOVE) 
      DO 110 IFOR=1,NFOR 
      READ(LFN,ERR=120,IOSTAT=IERR) (MRLU(I1),I1=1,5), 
     &(RRLU(I2),I2=1,100) 
  110 CONTINUE 
      MRLU(6)=MRLU(6)+NFOR 
      RETURN 
 
C...Write error. 
  120 WRITE(CHERR,'(I8)') IERR 
      CALL LUERRM(18,'(RLUSET:) error when accessing file, IOSTAT ='// 
     &CHERR) 
 
      RETURN 
      END