[Wien] Constrained LDA calculations to find effective U

[SOHAN LAL]

Dear Wien2k users,
     I am new in Wien2k code. I want to calculate the effective U for NiO. I want to know, how to put the constrained number of d electrons in the core. Ni2+ has 8 d electrons. In order to calculate U, two calculations one with 4.5 up, 4 dn electrons, and second one with 4.5 up and 3 dn constrained d-electrons for one of the Ni atoms are necessary according to ref: G. K. H. Madsen and P. Nov´ak, Europhys. Lett. 69, 777 (2005). I want to know, how NiO.incup and NiO.incdn files are made such that the  4.5 up and 4 dn constrained d electrons are included in the core for 1st calculations. Plese shed a light on this. Thanks $ Regards Sohan Lal 
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