common /srutu/icall
integer icant
external icant
+ integer xshift,yshift,zshift
c print *,'Entering EGB nnt=',nnt,' nct=',nct,' expon=',expon
evdw=0.0D0
evdw_t=0.0d0
xi=c(1,nres+i)
yi=c(2,nres+i)
zi=c(3,nres+i)
+ xi=mod(xi,boxxsize)
+ if (xi.lt.0) xi=xi+boxxsize
+ yi=mod(yi,boxysize)
+ if (yi.lt.0) yi=yi+boxysize
+ zi=mod(zi,boxzsize)
+ if (zi.lt.0) zi=zi+boxzsize
dxi=dc_norm(1,nres+i)
dyi=dc_norm(2,nres+i)
dzi=dc_norm(3,nres+i)
c alf1=0.0D0
c alf2=0.0D0
c alf12=0.0D0
- xj=c(1,nres+j)-xi
- yj=c(2,nres+j)-yi
- zj=c(3,nres+j)-zi
+ xj=c(1,nres+j)
+ yj=c(2,nres+j)
+ zj=c(3,nres+j)
+ xj=mod(xj,boxxsize)
+ if (xj.lt.0) xj=xj+boxxsize
+ yj=mod(yj,boxysize)
+ if (yj.lt.0) yj=yj+boxysize
+ zj=mod(zj,boxzsize)
+ if (zj.lt.0) zj=zj+boxzsize
+ dist_init=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ xj_safe=xj
+ yj_safe=yj
+ zj_safe=zj
+ subchap=0
+ do xshift=-1,1
+ do yshift=-1,1
+ do zshift=-1,1
+ xj=xj_safe+xshift*boxxsize
+ yj=yj_safe+yshift*boxysize
+ zj=zj_safe+zshift*boxzsize
+ dist_temp=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ if(dist_temp.lt.dist_init) then
+ dist_init=dist_temp
+ xj_temp=xj
+ yj_temp=yj
+ zj_temp=zj
+ subchap=1
+ endif
+ enddo
+ enddo
+ enddo
+ if (subchap.eq.1) then
+ xj=xj_temp-xi
+ yj=yj_temp-yi
+ zj=zj_temp-zi
+ else
+ xj=xj_safe-xi
+ yj=yj_safe-yi
+ zj=zj_safe-zi
+ endif
dxj=dc_norm(1,nres+j)
dyj=dc_norm(2,nres+j)
dzj=dc_norm(3,nres+j)
c write (iout,*) i,j,xj,yj,zj
rrij=1.0D0/(xj*xj+yj*yj+zj*zj)
rij=dsqrt(rrij)
+ sss=sscale((1.0d0/rij)/sigma(itypi,itypj))
+ sssgrad=sscagrad((1.0d0/rij)/sigma(itypi,itypj))
+ if (sss.le.0.0d0) cycle
C Calculate angle-dependent terms of energy and contributions to their
C derivatives.
call sc_angular
eps3der=evdwij*eps2rt
evdwij=evdwij*eps2rt*eps3rt
if (bb(itypi,itypj).gt.0) then
- evdw=evdw+evdwij
+ evdw=evdw+evdwij*sss
else
- evdw_t=evdw_t+evdwij
+ evdw_t=evdw_t+evdwij*sss
endif
ij=icant(itypi,itypj)
aux=eps1*eps2rt**2*eps3rt**2
fac=-expon*(e1+evdwij)*rij_shift
sigder=fac*sigder
fac=rij*fac
+ fac=fac+evdwij/sss*sssgrad/sigma(itypi,itypj)*rij
C Calculate the radial part of the gradient
gg(1)=xj*fac
gg(2)=yj*fac
gcorr_loc(i)=0.0d0
enddo
do i=iatel_s,iatel_e
- if (itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1) cycle
+ if (i.eq.1) then
+ if (itype(i).eq.ntyp1.or. itype(i+1).eq.ntyp1
+ & .or. itype(i+2).eq.ntyp1) cycle
+ else
+ if (itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1
+ & .or. itype(i+2).eq.ntyp1
+ & .or. itype(i-1).eq.ntyp1
+ &) cycle
+ endif
if (itel(i).eq.0) goto 1215
dxi=dc(1,i)
dyi=dc(2,i)
xmedi=c(1,i)+0.5d0*dxi
ymedi=c(2,i)+0.5d0*dyi
zmedi=c(3,i)+0.5d0*dzi
+ xmedi=mod(xmedi,boxxsize)
+ if (xmedi.lt.0) xmedi=xmedi+boxxsize
+ ymedi=mod(ymedi,boxysize)
+ if (ymedi.lt.0) ymedi=ymedi+boxysize
+ zmedi=mod(zmedi,boxzsize)
+ if (zmedi.lt.0) zmedi=zmedi+boxzsize
num_conti=0
c write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i)
do j=ielstart(i),ielend(i)
- if (itype(j).eq.ntyp1 .or. itype(j+1).eq.ntyp1) cycle
+ if (j.eq.1) then
+ if (itype(j).eq.ntyp1 .or. itype(j+1).eq.ntyp1
+ & .or.itype(j+2).eq.ntyp1
+ &) cycle
+ else
+ if (itype(j).eq.ntyp1 .or. itype(j+1).eq.ntyp1
+ & .or.itype(j+2).eq.ntyp1
+ & .or.itype(j-1).eq.ntyp1
+ &) cycle
+ endif
if (itel(j).eq.0) goto 1216
ind=ind+1
iteli=itel(i)
dx_normj=dc_norm(1,j)
dy_normj=dc_norm(2,j)
dz_normj=dc_norm(3,j)
- xj=c(1,j)+0.5D0*dxj-xmedi
- yj=c(2,j)+0.5D0*dyj-ymedi
- zj=c(3,j)+0.5D0*dzj-zmedi
+ xj=c(1,j)+0.5D0*dxj
+ yj=c(2,j)+0.5D0*dyj
+ zj=c(3,j)+0.5D0*dzj
+ xj=mod(xj,boxxsize)
+ if (xj.lt.0) xj=xj+boxxsize
+ yj=mod(yj,boxysize)
+ if (yj.lt.0) yj=yj+boxysize
+ zj=mod(zj,boxzsize)
+ if (zj.lt.0) zj=zj+boxzsize
+ dist_init=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ xj_safe=xj
+ yj_safe=yj
+ zj_safe=zj
+ isubchap=0
+ do xshift=-1,1
+ do yshift=-1,1
+ do zshift=-1,1
+ xj=xj_safe+xshift*boxxsize
+ yj=yj_safe+yshift*boxysize
+ zj=zj_safe+zshift*boxzsize
+ dist_temp=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ if(dist_temp.lt.dist_init) then
+ dist_init=dist_temp
+ xj_temp=xj
+ yj_temp=yj
+ zj_temp=zj
+ isubchap=1
+ endif
+ enddo
+ enddo
+ enddo
+ if (isubchap.eq.1) then
+ xj=xj_temp-xmedi
+ yj=yj_temp-ymedi
+ zj=zj_temp-zmedi
+ else
+ xj=xj_safe-xmedi
+ yj=yj_safe-ymedi
+ zj=zj_safe-zmedi
+ endif
+
rij=xj*xj+yj*yj+zj*zj
+ sss=sscale(sqrt(rij))
+ sssgrad=sscagrad(sqrt(rij))
rrmij=1.0D0/rij
rij=dsqrt(rij)
rmij=1.0D0/rij
C 12/26/95 - for the evaluation of multi-body H-bonding interactions
ees0ij=4.0D0+fac*fac-3.0D0*(cosb*cosb+cosg*cosg)
ees=ees+eesij
- evdw1=evdw1+evdwij
+ evdw1=evdw1+evdwij*sss
cd write(iout,'(2(2i3,2x),7(1pd12.4)/2(3(1pd12.4),5x)/)')
cd & iteli,i,itelj,j,aaa,bbb,ael6i,ael3i,
cd & 1.0D0/dsqrt(rrmij),evdwij,eesij,
C Calculate contributions to the Cartesian gradient.
C
#ifdef SPLITELE
- facvdw=-6*rrmij*(ev1+evdwij)
+ facvdw=-6*rrmij*(ev1+evdwij)*sss
facel=-3*rrmij*(el1+eesij)
fac1=fac
erij(1)=xj*rmij
gelc(l,k)=gelc(l,k)+ggg(l)
enddo
enddo
- ggg(1)=facvdw*xj
- ggg(2)=facvdw*yj
- ggg(3)=facvdw*zj
+C ggg(1)=facvdw*xj
+C ggg(2)=facvdw*yj
+C ggg(3)=facvdw*zj
+ if (sss.gt.0.0) then
+ ggg(1)=facvdw*xj+sssgrad*rmij*evdwij*xj
+ ggg(2)=facvdw*yj+sssgrad*rmij*evdwij*yj
+ ggg(3)=facvdw*zj+sssgrad*rmij*evdwij*zj
+ else
+ ggg(1)=0.0
+ ggg(2)=0.0
+ ggg(3)=0.0
+ endif
do k=1,3
ghalf=0.5D0*ggg(k)
gvdwpp(k,i)=gvdwpp(k,i)+ghalf
enddo
enddo
#else
- facvdw=ev1+evdwij
+ facvdw=(ev1+evdwij)*sss
facel=el1+eesij
fac1=fac
fac=-3*rrmij*(facvdw+facvdw+facel)
xi=0.5D0*(c(1,i)+c(1,i+1))
yi=0.5D0*(c(2,i)+c(2,i+1))
zi=0.5D0*(c(3,i)+c(3,i+1))
+C Returning the ith atom to box
+ xi=mod(xi,boxxsize)
+ if (xi.lt.0) xi=xi+boxxsize
+ yi=mod(yi,boxysize)
+ if (yi.lt.0) yi=yi+boxysize
+ zi=mod(zi,boxzsize)
+ if (zi.lt.0) zi=zi+boxzsize
do iint=1,nscp_gr(i)
c yj=c(2,nres+j)-yi
c zj=c(3,nres+j)-zi
C Uncomment following three lines for Ca-p interactions
- xj=c(1,j)-xi
- yj=c(2,j)-yi
- zj=c(3,j)-zi
+ xj=c(1,j)
+ yj=c(2,j)
+ zj=c(3,j)
+C returning the jth atom to box
+ xj=mod(xj,boxxsize)
+ if (xj.lt.0) xj=xj+boxxsize
+ yj=mod(yj,boxysize)
+ if (yj.lt.0) yj=yj+boxysize
+ zj=mod(zj,boxzsize)
+ if (zj.lt.0) zj=zj+boxzsize
+ dist_init=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ xj_safe=xj
+ yj_safe=yj
+ zj_safe=zj
+ subchap=0
+C Finding the closest jth atom
+ do xshift=-1,1
+ do yshift=-1,1
+ do zshift=-1,1
+ xj=xj_safe+xshift*boxxsize
+ yj=yj_safe+yshift*boxysize
+ zj=zj_safe+zshift*boxzsize
+ dist_temp=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+ if(dist_temp.lt.dist_init) then
+ dist_init=dist_temp
+ xj_temp=xj
+ yj_temp=yj
+ zj_temp=zj
+ subchap=1
+ endif
+ enddo
+ enddo
+ enddo
+ if (subchap.eq.1) then
+ xj=xj_temp-xi
+ yj=yj_temp-yi
+ zj=zj_temp-zi
+ else
+ xj=xj_safe-xi
+ yj=yj_safe-yi
+ zj=zj_safe-zi
+ endif
+
rrij=1.0D0/(xj*xj+yj*yj+zj*zj)
+C sss is scaling function for smoothing the cutoff gradient otherwise
+C the gradient would not be continuouse
+ sss=sscale(1.0d0/(dsqrt(rrij)))
+ if (sss.le.0.0d0) cycle
+ sssgrad=sscagrad(1.0d0/(dsqrt(rrij)))
fac=rrij**expon2
e1=fac*fac*aad(itypj,iteli)
e2=fac*bad(itypj,iteli)
if (iabs(j-i) .le. 2) then
e1=scal14*e1
e2=scal14*e2
- evdw2_14=evdw2_14+e1+e2
+ evdw2_14=evdw2_14+(e1+e2)*sss
endif
evdwij=e1+e2
c write (iout,*) i,j,evdwij
- evdw2=evdw2+evdwij
+ evdw2=evdw2+evdwij*sss
if (calc_grad) then
C
C Calculate contributions to the gradient in the virtual-bond and SC vectors.
C
- fac=-(evdwij+e1)*rrij
+ fac=-(evdwij+e1)*rrij*sss
+ fac=fac+(evdwij)*sssgrad*dsqrt(rrij)/expon
ggg(1)=xj*fac
ggg(2)=yj*fac
ggg(3)=zj*fac
estr=0.0d0
estr1=0.0d0
do i=nnt+1,nct
- if (itype(i-1).eq.ntyp1 .or. itype(i).eq.ntyp1) then
- estr1=estr1+gnmr1(vbld(i),-1.0d0,distchainmax)
- do j=1,3
- gradb(j,i-1)=gnmr1prim(vbld(i),-1.0d0,distchainmax)
- & *dc(j,i-1)/vbld(i)
- enddo
- if (energy_dec) write(iout,*)
- & "estr1",i,gnmr1(vbld(i),-1.0d0,distchainmax)
- else
+ if (itype(i-1).eq.ntyp1 .and. itype(i).eq.ntyp1) cycle
+C estr1=estr1+gnmr1(vbld(i),-1.0d0,distchainmax)
+C do j=1,3
+C gradb(j,i-1)=gnmr1prim(vbld(i),-1.0d0,distchainmax)
+C & *dc(j,i-1)/vbld(i)
+C enddo
+C if (energy_dec) write(iout,*)
+C & "estr1",i,vbld(i),distchainmax,
+C & gnmr1(vbld(i),-1.0d0,distchainmax)
+C else
+ if (itype(i-1).eq.ntyp1 .or. itype(i).eq.ntyp1) then
+ diff = vbld(i)-vbldpDUM
+ else
diff = vbld(i)-vbldp0
c write (iout,*) i,vbld(i),vbldp0,diff,AKP*diff*diff
+ endif
estr=estr+diff*diff
do j=1,3
gradb(j,i-1)=AKP*diff*dc(j,i-1)/vbld(i)
enddo
- endif
-
+C endif
+C write (iout,'(a7,i5,4f7.3)')
+C & "estr bb",i,vbld(i),vbldp0,diff,AKP*diff*diff
enddo
estr=0.5d0*AKP*estr+estr1
c
c write (*,'(a,i2)') 'EBEND ICG=',icg
c write (iout,*) ithet_start,ithet_end
do i=ithet_start,ithet_end
- if (itype(i-1).eq.ntyp1) cycle
+ if (i.le.2) cycle
+ if ((itype(i-1).eq.ntyp1).or.itype(i-2).eq.ntyp1
+ & .or.itype(i).eq.ntyp1) cycle
C Zero the energy function and its derivative at 0 or pi.
call splinthet(theta(i),0.5d0*delta,ss,ssd)
it=itype(i-1)
ichir21=isign(1,itype(i))
ichir22=isign(1,itype(i))
endif
- if (i.gt.3 .and. itype(i-2).ne.ntyp1) then
+ if (i.eq.3) then
+ y(1)=0.0D0
+ y(2)=0.0D0
+ else
+ if (i.gt.3 .and. itype(i-3).ne.ntyp1) then
#ifdef OSF
phii=phi(i)
icrc=0
y(1)=0.0D0
y(2)=0.0D0
endif
- if (i.lt.nres .and. itype(i).ne.ntyp1) then
+ endif
+ if (i.lt.nres .and. itype(i+1).ne.ntyp1) then
#ifdef OSF
phii1=phi(i+1)
icrc=0
etheta=0.0D0
c write (iout,*) "ithetyp",(ithetyp(i),i=1,ntyp1)
do i=ithet_start,ithet_end
- if (itype(i-1).eq.ntyp1) cycle
+ if (i.le.2) cycle
+ if ((itype(i-1).eq.ntyp1).or.itype(i-2).eq.ntyp1
+ & .or.itype(i).eq.ntyp1) cycle
if (iabs(itype(i+1)).eq.20) iblock=2
if (iabs(itype(i+1)).ne.20) iblock=1
dethetai=0.0d0
dephii=0.0d0
dephii1=0.0d0
theti2=0.5d0*theta(i)
-CC Ta zmina jest niewlasciwa
ityp2=ithetyp((itype(i-1)))
do k=1,nntheterm
coskt(k)=dcos(k*theti2)
sinkt(k)=dsin(k*theti2)
enddo
- if (i.gt.3 .and. itype(i-2).ne.ntyp1) then
+ if (i.eq.3) then
+ phii=0.0d0
+ ityp1=nthetyp+1
+ do k=1,nsingle
+ cosph1(k)=0.0d0
+ sinph1(k)=0.0d0
+ enddo
+ else
+ if (i.gt.3 .and. itype(i-3).ne.ntyp1) then
#ifdef OSF
phii=phi(i)
if (phii.ne.phii) phii=150.0
sinph1(k)=0.0d0
enddo
endif
- if (i.lt.nres .and. itype(i).ne.ntyp1) then
+ endif
+ if (i.lt.nres .and. itype(i+1).ne.ntyp1) then
#ifdef OSF
phii1=phi(i+1)
if (phii1.ne.phii1) phii1=150.0
c lprn=.true.
etors=0.0D0
do i=iphi_start,iphi_end
- if (itype(i-2).eq.ntyp1 .or. itype(i-1).eq.ntyp1
- & .or. itype(i).eq.ntyp1) cycle
+ if (i.le.2) cycle
+ if (itype(i-2).eq.ntyp1.or. itype(i-1).eq.ntyp1
+ & .or. itype(i).eq.ntyp1 .or. itype(i-3).eq.ntyp1) cycle
if (itel(i-2).eq.0 .or. itel(i-1).eq.0) goto 1215
if (iabs(itype(i)).eq.20) then
iblock=2
c lprn=.true.
etors_d=0.0D0
do i=iphi_start,iphi_end-1
- if (itype(i-2).eq.ntyp1 .or. itype(i-1).eq.ntyp1
- & .or. itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1) cycle
+ if (i.le.3) cycle
+ if ((itype(i-2).eq.ntyp1).or.itype(i-3).eq.ntyp1.or.
+ & (itype(i-1).eq.ntyp1).or.(itype(i).eq.ntyp1).or.
+ & (itype(i+1).eq.ntyp1)) cycle
if (itel(i-2).eq.0 .or. itel(i-1).eq.0 .or. itel(i).eq.0)
& goto 1215
itori=itortyp(itype(i-2))
integer dimen1,dimen2,atom,indx
double precision buffer(dimen1,dimen2)
double precision zapas
- common /contacts_hb/ zapas(3,20,maxres,7),
- & facont_hb(20,maxres),ees0p(20,maxres),ees0m(20,maxres),
- & num_cont_hb(maxres),jcont_hb(20,maxres)
+ common /contacts_hb/ zapas(3,ntyp,maxres,7),
+ & facont_hb(ntyp,maxres),ees0p(ntyp,maxres),ees0m(ntyp,maxres),
+ & num_cont_hb(maxres),jcont_hb(ntyp,maxres)
num_kont=buffer(1,indx+26)
num_kont_old=num_cont_hb(atom)
num_cont_hb(atom)=num_kont+num_kont_old
scalar=sc
return
end
+C-----------------------------------------------------------------------
+ double precision function sscale(r)
+ double precision r,gamm
+ include "COMMON.SPLITELE"
+ if(r.lt.r_cut-rlamb) then
+ sscale=1.0d0
+ else if(r.le.r_cut.and.r.ge.r_cut-rlamb) then
+ gamm=(r-(r_cut-rlamb))/rlamb
+ sscale=1.0d0+gamm*gamm*(2*gamm-3.0d0)
+ else
+ sscale=0d0
+ endif
+ return
+ end
+C-----------------------------------------------------------------------
+C-----------------------------------------------------------------------
+ double precision function sscagrad(r)
+ double precision r,gamm
+ include "COMMON.SPLITELE"
+ if(r.lt.r_cut-rlamb) then
+ sscagrad=0.0d0
+ else if(r.le.r_cut.and.r.ge.r_cut-rlamb) then
+ gamm=(r-(r_cut-rlamb))/rlamb
+ sscagrad=gamm*(6*gamm-6.0d0)/rlamb
+ else
+ sscagrad=0.0d0
+ endif
+ return
+ end
+C-----------------------------------------------------------------------