+!----------------------------------------------------
+ subroutine etor_nucl(etors_nucl)
+! implicit real*8 (a-h,o-z)
+! include 'DIMENSIONS'
+! include 'COMMON.VAR'
+! include 'COMMON.GEO'
+! include 'COMMON.LOCAL'
+! include 'COMMON.TORSION'
+! include 'COMMON.INTERACT'
+! include 'COMMON.DERIV'
+! include 'COMMON.CHAIN'
+! include 'COMMON.NAMES'
+! include 'COMMON.IOUNITS'
+! include 'COMMON.FFIELD'
+! include 'COMMON.TORCNSTR'
+! include 'COMMON.CONTROL'
+ real(kind=8) :: etors_nucl,edihcnstr
+ logical :: lprn
+!el local variables
+ integer :: i,j,iblock,itori,itori1
+ real(kind=8) :: phii,gloci,v1ij,v2ij,cosphi,sinphi,&
+ vl1ij,vl2ij,vl3ij,pom1,difi,etors_ii,pom
+! Set lprn=.true. for debugging
+ lprn=.false.
+! lprn=.true.
+ etors_nucl=0.0D0
+ print *,"iphi_nucl_start/end", iphi_nucl_start,iphi_nucl_end
+ do i=iphi_nucl_start,iphi_nucl_end
+ if (itype(i-2,2).eq.ntyp1_molec(2) .or. itype(i-1,2).eq.ntyp1_molec(2) &
+ .or. itype(i-3,2).eq.ntyp1_molec(2) &
+ .or. itype(i,2).eq.ntyp1_molec(2)) cycle
+ etors_ii=0.0D0
+ itori=itortyp_nucl(itype(i-2,2))
+ itori1=itortyp_nucl(itype(i-1,2))
+ phii=phi(i)
+ print *,i,itori,itori1
+ gloci=0.0D0
+!C Regular cosine and sine terms
+ do j=1,nterm_nucl(itori,itori1)
+ v1ij=v1_nucl(j,itori,itori1)
+ v2ij=v2_nucl(j,itori,itori1)
+ cosphi=dcos(j*phii)
+ sinphi=dsin(j*phii)
+ etors_nucl=etors_nucl+v1ij*cosphi+v2ij*sinphi
+ if (energy_dec) etors_ii=etors_ii+&
+ v1ij*cosphi+v2ij*sinphi
+ gloci=gloci+j*(v2ij*cosphi-v1ij*sinphi)
+ enddo
+!C Lorentz terms
+!C v1
+!C E = SUM ----------------------------------- - v1
+!C [v2 cos(phi/2)+v3 sin(phi/2)]^2 + 1
+!C
+ cosphi=dcos(0.5d0*phii)
+ sinphi=dsin(0.5d0*phii)
+ do j=1,nlor_nucl(itori,itori1)
+ vl1ij=vlor1_nucl(j,itori,itori1)
+ vl2ij=vlor2_nucl(j,itori,itori1)
+ vl3ij=vlor3_nucl(j,itori,itori1)
+ pom=vl2ij*cosphi+vl3ij*sinphi
+ pom1=1.0d0/(pom*pom+1.0d0)
+ etors_nucl=etors_nucl+vl1ij*pom1
+ if (energy_dec) etors_ii=etors_ii+ &
+ vl1ij*pom1
+ pom=-pom*pom1*pom1
+ gloci=gloci+vl1ij*(vl3ij*cosphi-vl2ij*sinphi)*pom
+ enddo
+!C Subtract the constant term
+ etors_nucl=etors_nucl-v0_nucl(itori,itori1)
+ if (energy_dec) write (iout,'(a6,i5,0pf7.3)') &
+ 'etor',i,etors_ii-v0_nucl(itori,itori1)
+ if (lprn) &
+ write (iout,'(2(a3,2x,i3,2x),2i3,6f8.3/26x,6f8.3/)') &
+ restyp(itype(i-2,2),2),i-2,restyp(itype(i-1,2),2),i-1,itori,itori1, &
+ (v1_nucl(j,itori,itori1),j=1,6),(v2_nucl(j,itori,itori1),j=1,6)
+ gloc(i-3,icg)=gloc(i-3,icg)+wtor_nucl*gloci
+!c write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
+ enddo
+ return
+ end subroutine etor_nucl