constexpr unsigned int IF_CHEMBOND = 1 << 3;
constexpr unsigned int IF_BTYPE = 1 << 4;
constexpr unsigned int IF_ATYPE = 1 << 5;
-constexpr unsigned int IF_TABULATED = 1 << 6;
-constexpr unsigned int IF_LIMZERO = 1 << 7;
+constexpr unsigned int IF_DIHEDRAL = 1 << 6;
+constexpr unsigned int IF_PAIR = 1 << 7;
+constexpr unsigned int IF_TABULATED = 1 << 8;
+constexpr unsigned int IF_LIMZERO = 1 << 9;
/* These flags tell to some of the routines what can be done with this
* item in the list.
* With IF_BOND a bonded interaction will be calculated.