Electron localization function implementation in the exact muffin-tin orbitals method

We report implementation of the electron localization function (ELF) within exact muffin-tin orbitals (EMTO) formalism. The ELF is often used to study nature electronic bonding in different types materials, and it also an important ingredient meta-generalized gradient approximations, which are one classes exchange-correlation functionals. correctness verified with test calculations comparison previous literature results. supports not only regular ordered systems but disordered that have been calculated using coherent potential approximation method.