+c MODELLER restraint function
+ subroutine e_modeller(ehomology_constr)
+ implicit real*8 (a-h,o-z)
+ include 'DIMENSIONS'
+
+ integer nnn, i, j, k, ki, irec, l
+ integer katy, odleglosci, test7
+ real*8 odleg, odleg2, odleg3, kat, kat2, kat3, gdih(max_template)
+ real*8 distance(max_template),distancek(max_template),
+ & min_odl,godl(max_template),dih_diff(max_template)
+
+ include 'COMMON.SBRIDGE'
+ include 'COMMON.CHAIN'
+ include 'COMMON.GEO'
+ include 'COMMON.DERIV'
+ include 'COMMON.LOCAL'
+ include 'COMMON.INTERACT'
+ include 'COMMON.VAR'
+ include 'COMMON.IOUNITS'
+ include 'COMMON.MD'
+ include 'COMMON.CONTROL'
+
+
+ do i=1,19
+ distancek(i)=9999999.9
+ enddo
+
+
+ odleg=0.0d0
+
+c Pseudo-energy and gradient from homology restraints (MODELLER-like
+c function)
+C AL 5/2/14 - Introduce list of restraints
+ do ii = link_start_homo,link_end_homo
+ i = ires_homo(ii)
+ j = jres_homo(ii)
+ dij=dist(i,j)
+ do k=1,constr_homology
+ distance(k)=odl(k,ii)-dij
+ distancek(k)=
+ & 0.5d0*waga_dist(iset)*distance(k)**2*sigma_odl(k,ii)
+ enddo
+
+ min_odl=minval(distancek)
+#ifdef DEBUG
+ write (iout,*) "ij dij",i,j,dij
+ write (iout,*) "distance",(distance(k),k=1,constr_homology)
+ write (iout,*) "distancek",(distancek(k),k=1,constr_homology)
+ write (iout,* )"min_odl",min_odl
+#endif
+ odleg2=0.0d0
+ do k=1,constr_homology
+c Nie wiem po co to liczycie jeszcze raz!
+c odleg3=-waga_dist(iset)*((distance(i,j,k)**2)/
+c & (2*(sigma_odl(i,j,k))**2))
+ godl(k)=dexp(-distancek(k)+min_odl)
+ odleg2=odleg2+godl(k)
+
+ccc write(iout,779) i,j,k, "odleg2=",odleg2, "odleg3=", odleg3,
+ccc & "dEXP(odleg3)=", dEXP(odleg3),"distance(i,j,k)^2=",
+ccc & distance(i,j,k)**2, "dist(i+1,j+1)=", dist(i+1,j+1),
+ccc & "sigma_odl(i,j,k)=", sigma_odl(i,j,k)
+
+ enddo
+#ifdef DEBUG
+ write (iout,*) "godl",(godl(k),k=1,constr_homology)
+ write (iout,*) "ii i j",ii,i,j," odleg2",odleg2
+#endif
+ odleg=odleg-dLOG(odleg2/constr_homology)+min_odl
+c Gradient
+ sum_godl=odleg2
+ sum_sgodl=0.0
+ do k=1,constr_homology
+c godl=dexp(((-(distance(i,j,k)**2)/(2*(sigma_odl(i,j,k))**2))
+c & *waga_dist(iset))+min_odl
+ sgodl=-godl(k)*distance(k)*sigma_odl(k,ii)*waga_dist(iset)
+ sum_sgodl=sum_sgodl+sgodl
+
+c sgodl2=sgodl2+sgodl
+c write(iout,*) i, j, k, distance(i,j,k), "W GRADIENCIE1"
+c write(iout,*) "constr_homology=",constr_homology
+c write(iout,*) i, j, k, "TEST K"
+ enddo
+
+ grad_odl3=sum_sgodl/(sum_godl*dij)
+
+
+c write(iout,*) i, j, k, distance(i,j,k), "W GRADIENCIE2"
+c write(iout,*) (distance(i,j,k)**2), (2*(sigma_odl(i,j,k))**2),
+c & (-(distance(i,j,k)**2)/(2*(sigma_odl(i,j,k))**2))
+
+ccc write(iout,*) godl, sgodl, grad_odl3
+
+c grad_odl=grad_odl+grad_odl3
+
+ do jik=1,3
+ ggodl=grad_odl3*(c(jik,i)-c(jik,j))
+ccc write(iout,*) c(jik,i+1), c(jik,j+1), (c(jik,i+1)-c(jik,j+1))
+ccc write(iout,746) "GRAD_ODL_1", i, j, jik, ggodl,
+ccc & ghpbc(jik,i+1), ghpbc(jik,j+1)
+ ghpbc(jik,i)=ghpbc(jik,i)+ggodl
+ ghpbc(jik,j)=ghpbc(jik,j)-ggodl
+ccc write(iout,746) "GRAD_ODL_2", i, j, jik, ggodl,
+ccc & ghpbc(jik,i+1), ghpbc(jik,j+1)
+
+ enddo
+ccc write(iout,778)"TEST: odleg2=", odleg2, "DLOG(odleg2)=",
+ccc & dLOG(odleg2),"-odleg=", -odleg
+
+ enddo ! ii
+c Pseudo-energy and gradient from dihedral-angle restraints from
+c homology templates
+c write (iout,*) "End of distance loop"
+c call flush(iout)
+ kat=0.0d0
+c write (iout,*) idihconstr_start_homo,idihconstr_end_homo
+ do i=idihconstr_start_homo,idihconstr_end_homo
+ kat2=0.0d0
+c betai=beta(i,i+1,i+2,i+3)
+ betai = phi(i+3)
+ do k=1,constr_homology
+ dih_diff(k)=pinorm(dih(k,i)-betai)
+c if (dih_diff(i,k).gt.3.14159) dih_diff(i,k)=
+c & -(6.28318-dih_diff(i,k))
+c if (dih_diff(i,k).lt.-3.14159) dih_diff(i,k)=
+c & 6.28318+dih_diff(i,k)
+
+ kat3=-0.5d0*waga_angle(iset)*dih_diff(k)**2*sigma_dih(k,i)
+ gdih(k)=dexp(kat3)
+ kat2=kat2+gdih(k)
+c write(iout,*) "kat2=", kat2, "exp(kat3)=", exp(kat3)
+c write(*,*)""
+ enddo
+#ifdef DEBUG
+ write (iout,*) "i",i," betai",betai," kat2",kat2
+ write (iout,*) "gdih",(gdih(k),k=1,constr_homology)
+#endif
+ if (kat2.le.1.0d-14) cycle
+ kat=kat-dLOG(kat2/constr_homology)
+
+ccc write(iout,778)"TEST: kat2=", kat2, "DLOG(kat2)=",
+ccc & dLOG(kat2), "-kat=", -kat
+
+c ----------------------------------------------------------------------
+c Gradient
+c ----------------------------------------------------------------------
+
+ sum_gdih=kat2
+ sum_sgdih=0.0
+ do k=1,constr_homology
+ sgdih=-gdih(k)*dih_diff(k)*sigma_dih(k,i)*waga_angle(iset)
+ sum_sgdih=sum_sgdih+sgdih
+ enddo
+ grad_dih3=sum_sgdih/sum_gdih
+
+c write(iout,*)i,k,gdih,sgdih,beta(i+1,i+2,i+3,i+4),grad_dih3
+ccc write(iout,747) "GRAD_KAT_1", i, nphi, icg, grad_dih3,
+ccc & gloc(nphi+i-3,icg)
+ gloc(i,icg)=gloc(i,icg)+grad_dih3
+ccc write(iout,747) "GRAD_KAT_2", i, nphi, icg, grad_dih3,
+ccc & gloc(nphi+i-3,icg)
+
+ enddo
+
+
+c Total energy from homology restraints
+#ifdef DEBUG
+ write (iout,*) "odleg",odleg," kat",kat
+#endif
+ ehomology_constr=odleg+kat
+ return
+
+ 748 format(a8,f12.3,a6,f12.3,a7,f12.3)
+ 747 format(a12,i4,i4,i4,f8.3,f8.3)
+ 746 format(a12,i4,i4,i4,f8.3,f8.3,f8.3)
+ 778 format(a7,1X,f10.3,1X,a4,1X,f10.3,1X,a5,1X,f10.3)
+ 779 format(i3,1X,i3,1X,i2,1X,a7,1X,f7.3,1X,a7,1X,f7.3,1X,a13,1X,
+ & f7.3,1X,a17,1X,f9.3,1X,a10,1X,f8.3,1X,a10,1X,f8.3)
+ end
+
+c------------------------------------------------------------------------------