source: proiecte/pmake3d/make3d_original/Make3dSingleImageStanford_version0.1/third_party/opt/yalmip/extras/@lmi/imag2reallmi.m @ 37

function Freal = imag2reallmi(F)

% Author Johan Löfberg 
% $Id: imag2reallmi.m,v 1.3 2005/02/04 10:10:26 johanl Exp $

Counter = size(F.clauses,2);
Freal = F;
j=1;
for i = 1:Counter
    if isreal(F.clauses{i}.data)
        Freal.clauses{j}=F.clauses{i};
        j = j+1;
    else
        switch F.clauses{i}.type
            case 1
                reF=real(F.clauses{j}.data);
                imF=imag(F.clauses{j}.data);
                Freal.clauses{j}.data=[reF imF;-imF reF];
                j = j+1;
            case {2,3}
                reF=real(F.clauses{j}.data);
                imF=imag(F.clauses{j}.data);
                Freal.clauses{j}.data=[reF;imF];
                j = j+1;
            case 4
                reF=real(F.clauses{j}.data);
                imF=imag(F.clauses{j}.data);
                Freal.clauses{j}.data=[reF(1);reF(2:end);imF(2:end)];
                j = j+1;       
            otherwise
                error('Internal bug. Please report.');
        end
    end
end