Dear PWSCF users: One of my program compiled by ifc output many question marks '?' for me. I think that it should output star marks '*' for format problem and nan 'not a number' for mathematic problem. So what's the meaning of '?'
I am sorry this question is not really about PWSCF, but I think somebody in this group may be able to give me an answer or some references. Thanks. Sincerely zyli ===================================================================
