pub unsafe extern "C" fn IXA_MOL_SetAtomMass(
hStatus: IXA_STATUS_HANDLE,
hMolecule: IXA_MOL_HANDLE,
vAtom: IXA_ATOMID,
vMassNumber: c_int,
)pub unsafe extern "C" fn IXA_MOL_SetAtomMass(
hStatus: IXA_STATUS_HANDLE,
hMolecule: IXA_MOL_HANDLE,
vAtom: IXA_ATOMID,
vMassNumber: c_int,
)