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
+ dist_init=(xj-xmedi)**2+(yj-ymedi)**2+(zj-zmedi)**2
xj_safe=xj
yj_safe=yj
zj_safe=zj
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
+ dist_temp=(xj-xmedi)**2+(yj-ymedi)**2+(zj-zmedi)**2
if(dist_temp.lt.dist_init) then
dist_init=dist_temp
xj_temp=xj
yj=yj_safe-ymedi
zj=zj_safe-zmedi
endif
-
rij=xj*xj+yj*yj+zj*zj
sss=sscale(sqrt(rij))
sssgrad=sscagrad(sqrt(rij))