nstance |arch0.dat-s| stored in directory |datafiles|. All the user has
% to do to solve the problem is to call 
%
%  [x] = solve_sdpa('datafiles/arch0.dat-s');
%
% or, which is the same, the following sequence of commands:
% 
%  sdpdata=readsdpa('datafiles/arch0.dat-s');
%  penm=sdp_define(sdpdata)
%  prob=penlab(penm);
%  prob.solve();
%  x = prob.x;
%
% *Linear semidefinite programming with SeDuMi input*
% 
% Go to directory |interfaces/LMI|. 
% Assume that a linear SDP problem is stored 