This directory contains few examples of calculating van der Waals coefficients for 
closed-shell ions in Thomas-Fermi and von Weizsaecker approximation (experimental).
The outputs are in the directory reference.

ne.sla-noc.in       |
ar.sla-noc.in       |  only Slater exchange 
kr.sla-noc.in       |

ne.sla-pz.in        |
ar.sla-pz.in        |  Slater exchange and Perdew-Zunger correlation
kr.sla-pz.in        |

ne.sla-gl.in        |  Slater exchange and Gunnarsson-Lundqvist correlation
ar.sla-gl.in        |  ( used in G.D. Mahan, J. Chem. Phys., 76, 493, 1982
kr.sla-gl.in        |    taken as reference )

The script test.job runs ld1.x on these examples (output in results dir.)
and compares the calculated C6 coefficients with those contained in reference 
(see file compare.dat).