double precision dcdv,dxdv,dxds,gradx,gradc,gvdwc,gelc,gradx_scp,
     & gvdwc_scp,ghpbx,ghpbc,gloc
      integer nfl,icg
      common /derivat/ dcdv(6,maxdim),dxdv(6,maxdim),dxds(6,maxres),
     & gradx(3,maxres,2),gradc(3,maxres,2),gvdwx(3,maxres),
     & gvdwc(3,maxres),gelc(3,maxres),gradx_scp(3,maxres),
     & gvdwc_scp(3,maxres),ghpbx(3,maxres),ghpbc(3,maxres),
     & gloc(maxvar,2),gradcorr(3,maxres),gradxorr(3,maxres),
     & gradcorr5(3,maxres),gradcorr6(3,maxres),
     & gel_loc(3,maxres),gcorr4_turn(3,maxres),gel_loc_loc(maxvar),
     & gel_loc_turn4(maxvar),gcorr_loc(maxvar),
     & g_corr5_loc(maxvar),g_corr6_loc(maxvar),nfl,icg
      double precision derx
      common /deriv_loc/ derx(3,5,2)