+C Torsional constants of the rotation about virtual-bond dihedral angles
+ double precision v1,v2,vlor1,vlor2,vlor3,v0
+ integer itortyp,ntortyp,nterm,nlor,nterm_old
+ common/torsion/v0(maxtor,maxtor),v1(maxterm,maxtor,maxtor),
+ & v2(maxterm,maxtor,maxtor),vlor1(maxlor,maxtor,maxtor),
+ & vlor2(maxlor,maxtor,maxtor),vlor3(maxlor,maxtor,maxtor),
+ & itortyp(ntyp),ntortyp,nterm(maxtor,maxtor),nlor(maxtor,maxtor)
+ & ,nterm_old
+C 6/23/01 - constants for double torsionals
+ double precision v1c,v1s,v2c,v2s
+ integer ntermd_1,ntermd_2
+ common /torsiond/ v1c(2,maxtermd_1,maxtor,maxtor,maxtor),
+ & v1s(2,maxtermd_1,maxtor,maxtor,maxtor),
+ & v2c(maxtermd_2,maxtermd_2,maxtor,maxtor,maxtor),
+ & v2s(maxtermd_2,maxtermd_2,maxtor,maxtor,maxtor),
+ & ntermd_1(maxtor,maxtor,maxtor),ntermd_2(maxtor,maxtor,maxtor)
+C 9/18/99 - added Fourier coeffficients of the expansion of local energy
+C surface
+ double precision b1,b2,cc,dd,ee,ctilde,dtilde,b2tilde
+ integer nloctyp
+ common/fourier/ b1(2,maxtor),b2(2,maxtor),cc(2,2,maxtor),
+ & dd(2,2,maxtor),ee(2,2,maxtor),ctilde(2,2,maxtor),
+ & dtilde(2,2,maxtor),b1tilde(2,maxtor),nloctyp