-c Following expr replaced by a positive exp argument
-c sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))*
-c & dexp(-0.5d0*(odl(k,ii)/dist_cut)**2)
-
-c sigma_odl(k,ii)=hmscore(k)*rescore(k,i)*rescore(k,j)*
-c & dexp(-0.5d0*(odl(k,ii)/dist_cut)**2)
-c
- sigma_odl(k,ii)=1.0d0/(sigma_odl(k,ii)*sigma_odl(k,ii)) ! rescore ~ error
-c sigma_odl(k,ii)=sigma_odl(k,ii)*sigma_odl(k,ii)
-c
-c sigma_odl(k,ii)=sigma_odl_temp(i,j,k)* ! new var read from file (?)
-c & sigma_odl_temp(i,j,k) ! not inverse because of use of res. similarity
+ sigma_odl(k,ii)=1.0d0/(sigma_odl(k,ii)*sigma_odl(k,ii))