[37] | 1 | function sys = addlmi(F,X,handlestring) |
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| 2 | % ADDLMI Obsolete. |
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| 3 | % |
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| 4 | % Use overloaded + instead. |
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| 5 | % |
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| 6 | |
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| 7 | % Author Johan Löfberg |
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| 8 | % $Id: addlmi.m,v 1.2 2004/07/19 13:54:35 johanl Exp $ |
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| 9 | |
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| 10 | |
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| 11 | error('addlmi is obsolete. Use overloaded +'); |
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| 12 | |
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| 13 | switch(nargin) |
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| 14 | case {0,1} |
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| 15 | error('ADDLMI needs at least two arguments') |
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| 16 | case 2 |
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| 17 | % sys = F + lmi(X); |
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| 18 | handlestring = ''; |
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| 19 | case 3 |
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| 20 | % sys = F + lmi(X,handlestring); |
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| 21 | if ~isa(handlestring,'char') |
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| 22 | error('The handle must be a string') |
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| 23 | end |
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| 24 | otherwise |
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| 25 | error('addlmi takes at mopst 3 arguments'); |
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| 26 | end |
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| 27 | |
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| 28 | % Return empty LMI in degenerate case |
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| 29 | if isempty(X) |
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| 30 | sys = F; |
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| 31 | return |
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| 32 | end |
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| 33 | |
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| 34 | %Symbolic expression given |
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| 35 | % 0 : Nothing (i.e. error) |
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| 36 | % 1 : LMI |
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| 37 | % 2 : Elementwise |
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| 38 | % 3 : Equality |
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| 39 | TypeofConstraint = 0; |
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| 40 | switch class(X) |
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| 41 | case 'char' |
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| 42 | try |
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| 43 | sdpvarExpr = parseLMI(X); |
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| 44 | X = strrep(X,'.>','>'); |
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| 45 | X = strrep(X,'.<','<'); |
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| 46 | X = strrep(X,'=','==');X = strrep(X,'====','=='); |
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| 47 | catch |
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| 48 | error(lasterr) |
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| 49 | end |
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| 50 | try |
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| 51 | Fi=evalin('caller',sdpvarExpr); |
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| 52 | if ~(isa(Fi,'sdpvar') | isa(Fi,'constraint')) |
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| 53 | error('The string does not define a constraint involving SDPVAR objects') |
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| 54 | end |
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| 55 | catch |
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| 56 | error(lasterr) |
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| 57 | end |
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| 58 | case 'sdpvar' |
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| 59 | Fi = X; |
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| 60 | X='Numeric value'; |
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| 61 | case 'constraint' |
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| 62 | Fi = getlist(X); |
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| 63 | if length(Fi)>1 |
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| 64 | error('Hey, you have updated your code for version 3, so why don''t you remove those addlmi''s'); |
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| 65 | else |
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| 66 | Fi = Fi{1}; |
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| 67 | end |
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| 68 | X='Numeric value'; |
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| 69 | otherwise |
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| 70 | error('LMI should be an sdpvar object or string.') |
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| 71 | end |
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| 72 | |
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| 73 | if isempty(Fi) |
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| 74 | sys = F; |
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| 75 | return |
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| 76 | end |
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| 77 | |
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| 78 | switch nargin |
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| 79 | case 2 |
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| 80 | sys = F + lmi(Fi); |
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| 81 | case 3 |
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| 82 | sys = F + lmi(Fi,handlestring); |
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| 83 | otherwise |
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| 84 | end |
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| 85 | return |
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