[37] | 1 | function varargout = sdpfun(varargin) |
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| 2 | %SDPFUN Gateway to general functions on SDPVAR variables (overloaded) |
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| 3 | |
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| 4 | % Author Johan Löfberg |
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| 5 | % $Id: sdpfun.m,v 1.2 2006/09/08 08:52:12 joloef Exp $ |
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| 6 | |
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| 7 | switch class(varargin{1}) |
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| 8 | |
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| 9 | case {'struct','double'} % What is the numerical value of this argument (needed for displays etc) |
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| 10 | % SHOULD NEVER HAPPEN, THIS SHOULD BE CAUGHT BY BUILT-IN |
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| 11 | varargout{1} = feval(varargin{end},varargin{1:end-1}); |
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| 12 | |
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| 13 | case 'sdpvar' % Overloaded operator for SDPVAR objects. Pass on args and save them. |
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| 14 | % try to figure out size of expected output (many->1 or many->many |
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| 15 | varargin_copy = varargin; |
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| 16 | varargin_copy{1} = zeros(size(varargin_copy{1},1),size(varargin_copy{1},2)); |
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| 17 | output = feval(varargin_copy{end},varargin_copy{1:end-1}); |
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| 18 | if prod(size(output)) == 1 |
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| 19 | % MANY -> 1 |
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| 20 | varargout{1} = yalmip('addEvalVariable',mfilename,varargin{:}); |
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| 21 | else |
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| 22 | % MANY -> MANY |
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| 23 | y = []; |
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| 24 | [n,m] = size(varargin{1}); |
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| 25 | varargin{1} = varargin{1}(:); |
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| 26 | for i = 1:length(varargin{1}) |
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| 27 | varargin_copy = varargin; |
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| 28 | varargin_copy{1} = varargin_copy{1}(i); |
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| 29 | y = [y;yalmip('addEvalVariable',mfilename,varargin_copy{:})]; |
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| 30 | end |
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| 31 | varargout{1} = reshape(y,n,m); |
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| 32 | end |
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| 33 | |
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| 34 | case 'char' % YALMIP sends 'model' when it wants the epigraph or hypograph |
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| 35 | switch varargin{1} |
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| 36 | |
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| 37 | case {'graph','milp'} |
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| 38 | t = varargin{2}; |
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| 39 | X = varargin{3}; |
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| 40 | |
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| 41 | % This is different from so called extended operators |
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| 42 | % Just do it! |
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| 43 | F = SetupEvaluationVariable(varargin{:}); |
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| 44 | |
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| 45 | % Let YALMIP know about convexity etc |
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| 46 | varargout{1} = F; |
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| 47 | varargout{2} = struct('convexity','milp','monotonicity','milp','definiteness','milp'); |
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| 48 | varargout{3} = X; |
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| 49 | otherwise |
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| 50 | error('SDPVAR/SDPFUN called with CHAR argument?'); |
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| 51 | end |
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| 52 | otherwise |
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| 53 | error('SDPVAR/SDPFUN called with CHAR argument?'); |
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| 54 | end |
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