C^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                   
      SUBROUTINE FORCE(IREC8) 
C^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                   
      IMPLICIT REAL(A-H,O-Y)                                          
      IMPLICIT COMPLEX(Z)                                            
      INCLUDE 'PACVPP' 
C     VPP-PARALLEL
!XOCL SUBPROCESSOR PS(IPARA)=PQ(1:IPARA) 
!XOCL INDEX PARTITION IP=(PS,INDEX=1:KNV3,PART=BAND) 
      DIMENSION SSS(KNG1,KNV3,KTYP,10)
     &         ,ZZZ(KNG1,KEG,KNV3),ZFC(KEG,KNV3,KATM,10)
     &         ,OCCUU(KEG,KNV3)  
!XOCL LOCAL SSS(:,/IP,:,:),ZZZ(:,:,/IP),ZFC(:,/IP,:,:)
!XOCL LOCAL OCCUU(:,/IP) 
      EQUIVALENCE (SNL,SSS),(ZAJ,ZZZ),(ZFBB,ZFC)
     &           ,(OCCUP,OCCUU) 
      DIMENSION ZFX1(KEG),ZFX2(KEG),ZFX3(KEG),ZFX4(KEG)
      DIMENSION ZFY1(KEG),ZFY2(KEG),ZFY3(KEG),ZFY4(KEG)                 
      DIMENSION ZFZ1(KEG),ZFZ2(KEG),ZFZ3(KEG),ZFZ4(KEG)                 
      DIMENSION ZFB1(KEG),ZFB2(KEG),ZFB3(KEG),ZFB4(KEG) 
C
      DIMENSION ZFX5(KEG),ZFX6(KEG),ZFX7(KEG),ZFX8(KEG),ZFX9(KEG)
      DIMENSION ZFY5(KEG),ZFY6(KEG),ZFY7(KEG),ZFY8(KEG),ZFY9(KEG)
      DIMENSION ZFZ5(KEG),ZFZ6(KEG),ZFZ7(KEG),ZFZ8(KEG),ZFZ9(KEG)
      DIMENSION ZFB5(KEG),ZFB6(KEG),ZFB7(KEG),ZFB8(KEG),ZFB9(KEG)
      DIMENSION ZFBA(KEG) 
C                                                                       
      DO 1000 IA=1,KATM 
        ZFORC2(IA,1)=DCMPLX(0.0D0,0.0D0)                                
        ZFORC2(IA,2)=DCMPLX(0.0D0,0.0D0)                                
        ZFORC2(IA,3)=DCMPLX(0.0D0,0.0D0)                                
 1000 CONTINUE                                                          
C     VPP-PAEALLEL START
C!XOCL PARALLEL REGION
!XOCL SPREAD DO /IP 
      DO 2100 IK=1,KV3                                                  
        IIBA =  IBA(IK)                                                 
C*******DO 1 IBAN=NBD1,NBD2
C         IREC = KV3*(IBAN-1)+IK                                        
C         IF (IREC8.NE.0) IREC=IREC8*IREC-IREC8+1                       
C         READ(80,REC=IREC) ZV1                                         
C         DO 2 I=1,IIBA                                                 
C           ZEVC(I,IBAN) = ZV1(I)                                       
C   2     CONTINUE                                                      
C***1   CONTINUE 
        DO 2110 IA=1,KATM                                               
          CS=1.0D0/(WS(KFTYPE(IA))*UNIVOL)                              
          CP=1.0D0/(WP(KFTYPE(IA))*UNIVOL)                              
          DO 2115 IBAN=NBD1,NBD2                                        
            ZFX1(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFX2(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFX3(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFX4(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFY1(IBAN)=DCMPLX(0.0D0,0.0D0)                             
            ZFY2(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFY3(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFY4(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFZ1(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFZ2(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFZ3(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFZ4(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFB1(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFB2(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFB3(IBAN)=DCMPLX(0.0D0,0.0D0)                              
            ZFB4(IBAN)=DCMPLX(0.0D0,0.0D0)                              
 2115     CONTINUE                                                      
          DO 2200 IBAN=NBD1,NBD2                                        
            DO 1510 I=1,IIBA
              I1=NBASE(I,IK)                                            
              ZTMP=ZZZ(I,IBAN,IK)*DCONJG( ZFM2( I1 ,IA ) )             
              ZTMP1=ZTMP*SSS(I,IK,KFTYPE(IA),1)                         
              ZTMP2=ZTMP*SSS(I,IK,KFTYPE(IA),2)                         
              ZTMP3=ZTMP*SSS(I,IK,KFTYPE(IA),3)                         
              ZTMP4=ZTMP*SSS(I,IK,KFTYPE(IA),4)                         
              ZFB1(IBAN)=ZFB1(IBAN)+ZTMP1                               
              ZFB2(IBAN)=ZFB2(IBAN)+ZTMP2                               
              ZFB3(IBAN)=ZFB3(IBAN)+ZTMP3                               
              ZFB4(IBAN)=ZFB4(IBAN)+ZTMP4                               
              ZFX1(IBAN)=ZFX1(IBAN)+GX(I1)*ZTMP1                        
              ZFX2(IBAN)=ZFX2(IBAN)+GX(I1)*ZTMP2                        
              ZFX3(IBAN)=ZFX3(IBAN)+GX(I1)*ZTMP3                        
              ZFX4(IBAN)=ZFX4(IBAN)+GX(I1)*ZTMP4                        
              ZFY1(IBAN)=ZFY1(IBAN)+GY(I1)*ZTMP1                        
              ZFY2(IBAN)=ZFY2(IBAN)+GY(I1)*ZTMP2                        
              ZFY3(IBAN)=ZFY3(IBAN)+GY(I1)*ZTMP3                        
              ZFY4(IBAN)=ZFY4(IBAN)+GY(I1)*ZTMP4                        
              ZFZ1(IBAN)=ZFZ1(IBAN)+GZ(I1)*ZTMP1                        
              ZFZ2(IBAN)=ZFZ2(IBAN)+GZ(I1)*ZTMP2                        
              ZFZ3(IBAN)=ZFZ3(IBAN)+GZ(I1)*ZTMP3                        
              ZFZ4(IBAN)=ZFZ4(IBAN)+GZ(I1)*ZTMP4                        
 1510       CONTINUE 
 2200     CONTINUE                                                      
          DO 2205 IBAN=NBD1,NBD2 
            ZFC(IBAN,IK,IA,1)=CS*ZFB1(IBAN)
            ZFC(IBAN,IK,IA,2)=CP*ZFB2(IBAN)                             
            ZFC(IBAN,IK,IA,3)=CP*ZFB3(IBAN)                             
            ZFC(IBAN,IK,IA,4)=CP*ZFB4(IBAN) 
            ZFORC2(IA,1)=ZFORC2(IA,1)+OCCUU(IBAN,IK)*
     &                   ( DCONJG(ZFX1(IBAN))*ZFC(IBAN,IK,IA,1)         
     &                    +DCONJG(ZFX2(IBAN))*ZFC(IBAN,IK,IA,2)         
     &                    +DCONJG(ZFX3(IBAN))*ZFC(IBAN,IK,IA,3)         
     &                    +DCONJG(ZFX4(IBAN))*ZFC(IBAN,IK,IA,4)  )      
            ZFORC2(IA,2)=ZFORC2(IA,2)+OCCUU(IBAN,IK)*                   
     &                   ( DCONJG(ZFY1(IBAN))*ZFC(IBAN,IK,IA,1)         
     &                    +DCONJG(ZFY2(IBAN))*ZFC(IBAN,IK,IA,2)         
     &                    +DCONJG(ZFY3(IBAN))*ZFC(IBAN,IK,IA,3)         
     &                    +DCONJG(ZFY4(IBAN))*ZFC(IBAN,IK,IA,4)  )      
            ZFORC2(IA,3)=ZFORC2(IA,3)+OCCUU(IBAN,IK)*                   
     &                   ( DCONJG(ZFZ1(IBAN))*ZFC(IBAN,IK,IA,1)         
     &                    +DCONJG(ZFZ2(IBAN))*ZFC(IBAN,IK,IA,2)         
     &                    +DCONJG(ZFZ3(IBAN))*ZFC(IBAN,IK,IA,3)         
     &                    +DCONJG(ZFZ4(IBAN))*ZFC(IBAN,IK,IA,4)  ) 
 2205     CONTINUE                                                      
C
        IF (NLSPD(KFTYPE(IA)).EQ.2) THEN
C
          CD=1.0D0/(WD(KFTYPE(IA))*UNIVOL)
          DO 2135 IBAN=NBD1,NBD2                                        
            ZFX5(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFX6(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFX7(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFX8(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFX9(IBAN)=DCMPLX(0.0D0,0.0D0) 
            ZFY5(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFY6(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFY7(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFY8(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFY9(IBAN)=DCMPLX(0.0D0,0.0D0) 
            ZFZ5(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFZ6(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFZ7(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFZ8(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFZ9(IBAN)=DCMPLX(0.0D0,0.0D0) 
            ZFB5(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFB6(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFB7(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFB8(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFB9(IBAN)=DCMPLX(0.0D0,0.0D0)
            ZFBA(IBAN)=DCMPLX(0.0D0,0.0D0)
 2135     CONTINUE                                                      
          DO 2230 IBAN=NBD1,NBD2                                        
            DO 1513 I=1,IIBA
              I1=NBASE(I,IK)                                            
              ZTMP=ZZZ(I,IBAN,IK)*DCONJG( ZFM2( I1 ,IA ) )             
              ZTMP5=ZTMP*SSS(I,IK,KFTYPE(IA),5)
              ZTMP6=ZTMP*SSS(I,IK,KFTYPE(IA),6)
              ZTMP7=ZTMP*SSS(I,IK,KFTYPE(IA),7)
              ZTMP8=ZTMP*SSS(I,IK,KFTYPE(IA),8)
              ZTMP9=ZTMP*SSS(I,IK,KFTYPE(IA),9)
              ZTMPA=ZTMP*SSS(I,IK,KFTYPE(IA),10)
              ZFB5(IBAN)=ZFB5(IBAN)+ZTMP5
              ZFB6(IBAN)=ZFB6(IBAN)+ZTMP6
              ZFB7(IBAN)=ZFB7(IBAN)+ZTMP7
              ZFB8(IBAN)=ZFB8(IBAN)+ZTMP8
              ZFB9(IBAN)=ZFB9(IBAN)+ZTMP9
              ZFBA(IBAN)=ZFBA(IBAN)+ZTMPA
              ZFX5(IBAN)=ZFX5(IBAN)+GX(I1)*ZTMP5
              ZFX6(IBAN)=ZFX6(IBAN)+GX(I1)*ZTMP6
              ZFX7(IBAN)=ZFX7(IBAN)+GX(I1)*ZTMP7
              ZFX8(IBAN)=ZFX8(IBAN)+GX(I1)*ZTMP8
              ZFX9(IBAN)=ZFX9(IBAN)+GX(I1)*ZTMP9 
              ZFY5(IBAN)=ZFY5(IBAN)+GY(I1)*ZTMP5
              ZFY6(IBAN)=ZFY6(IBAN)+GY(I1)*ZTMP6
              ZFY7(IBAN)=ZFY7(IBAN)+GY(I1)*ZTMP7
              ZFY8(IBAN)=ZFY8(IBAN)+GY(I1)*ZTMP8
              ZFY9(IBAN)=ZFY9(IBAN)+GY(I1)*ZTMP9 
              ZFZ5(IBAN)=ZFZ5(IBAN)+GZ(I1)*ZTMP5
              ZFZ6(IBAN)=ZFZ6(IBAN)+GZ(I1)*ZTMP6
              ZFZ7(IBAN)=ZFZ7(IBAN)+GZ(I1)*ZTMP7
              ZFZ8(IBAN)=ZFZ8(IBAN)+GZ(I1)*ZTMP8
              ZFZ9(IBAN)=ZFZ9(IBAN)+GZ(I1)*ZTMP9
 1513      CONTINUE 
 2230     CONTINUE                                                      
          DO 2235 IBAN=NBD1,NBD2 
            ZFC(IBAN,IK,IA,5)=CD*ZFB5(IBAN)
            ZFC(IBAN,IK,IA,6)=CD*ZFB6(IBAN)
            ZFC(IBAN,IK,IA,7)=CD*ZFB7(IBAN)
            ZFC(IBAN,IK,IA,8)=CD*ZFB8(IBAN)
            ZFC(IBAN,IK,IA,9)=CD*ZFB9(IBAN) 
            ZFC(IBAN,IK,IA,10)=CD*ZFBA(IBAN) 
C     4/20, 1999, MODIFIED ZFX,Y,Z1 ---> ZFX,Y,Z5
            ZFORC2(IA,1)=ZFORC2(IA,1)+OCCUU(IBAN,IK)*
     &                   ( DCONJG(ZFX5(IBAN))*ZFC(IBAN,IK,IA,5)         
     &                    +DCONJG(ZFX6(IBAN))*ZFC(IBAN,IK,IA,6)
     &                    +DCONJG(ZFX7(IBAN))*ZFC(IBAN,IK,IA,7)
     &                    +DCONJG(ZFX8(IBAN))*ZFC(IBAN,IK,IA,8)
     &                    +DCONJG(ZFX9(IBAN))*ZFC(IBAN,IK,IA,9)  )
            ZFORC2(IA,2)=ZFORC2(IA,2)+OCCUU(IBAN,IK)*                   
     &                   ( DCONJG(ZFY5(IBAN))*ZFC(IBAN,IK,IA,5)         
     &                    +DCONJG(ZFY6(IBAN))*ZFC(IBAN,IK,IA,6)
     &                    +DCONJG(ZFY7(IBAN))*ZFC(IBAN,IK,IA,7)
     &                    +DCONJG(ZFY8(IBAN))*ZFC(IBAN,IK,IA,8)
     &                    +DCONJG(ZFY9(IBAN))*ZFC(IBAN,IK,IA,9)  ) 
            ZFORC2(IA,3)=ZFORC2(IA,3)+OCCUU(IBAN,IK)*                   
     &                   ( DCONJG(ZFZ5(IBAN))*ZFC(IBAN,IK,IA,5)         
     &                    +DCONJG(ZFZ6(IBAN))*ZFC(IBAN,IK,IA,6)
     &                    +DCONJG(ZFZ7(IBAN))*ZFC(IBAN,IK,IA,7)
     &                    +DCONJG(ZFZ8(IBAN))*ZFC(IBAN,IK,IA,8)
     &                    +DCONJG(ZFZ9(IBAN))*ZFC(IBAN,IK,IA,9)  ) 
 2235     CONTINUE                                                      
        END IF
C
 2110   CONTINUE                                                        
 2100 CONTINUE                                                          
!XOCL END SPREAD SUM(ZFORC2) 
C!XOCL END PARALLEL
      ZCCC = 4.D0*ZI*RVOL/(2.D0*PAI)**3/FLOAT(KV3)                      
C---------------------------------------------------------              
      DO 1501 IA=1,KATM                                                 
        ZFORC2(IA,1)=ZCCC*DIMAG( ZFORC2(IA,1) )                         
        ZFORC2(IA,2)=ZCCC*DIMAG( ZFORC2(IA,2) )                         
        ZFORC2(IA,3)=ZCCC*DIMAG( ZFORC2(IA,3) )                         
 1501 CONTINUE                                                          
 3000 FORMAT(I4,6F12.8)                                                 
      RETURN                                                            
      END