1 | function varargout = log(varargin) |
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2 | %LOG (overloaded) |
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3 | |
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4 | % Author Johan Löfberg |
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5 | % $Id: log.m,v 1.3 2006/03/13 13:12:02 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 '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 | error('Overloaded SDPVAR/NORM CALLED WITH DOUBLE. Report error') |
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12 | |
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13 | case 'sdpvar' % Overloaded operator for SDPVAR objects. |
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14 | if length(varargin{1}) == 1 |
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15 | varargout{1} = yalmip('addEvalVariable',mfilename,varargin{1}); |
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16 | else |
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17 | y = []; |
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18 | for i = 1:length(varargin{1}) |
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19 | y = [y;yalmip('addEvalVariable',mfilename,extsubsref(varargin{1},i))]; |
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20 | end |
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21 | varargout{1} = y; |
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22 | end |
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23 | |
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24 | case 'char' % YALMIP sends 'model' when it wants the epigraph or hypograph |
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25 | switch varargin{1} |
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26 | case 'graph' |
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27 | t = varargin{2}; |
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28 | X = varargin{3}; |
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29 | |
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30 | % This is different from so called extended operators |
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31 | % Just do it! |
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32 | F = SetupEvaluationVariable(varargin{:}); |
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33 | |
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34 | % Now add your own code, such as domain constraints |
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35 | F = F + set(X > eps); |
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36 | |
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37 | % Let YALMIP know about convexity etc |
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38 | varargout{1} = F; |
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39 | varargout{2} = struct('convexity','concave','monotonicity','increasing','definiteness','none'); |
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40 | varargout{3} = X; |
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41 | |
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42 | case 'milp' |
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43 | varargout{1} = []; |
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44 | varargout{2} = []; |
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45 | varargout{3} = []; |
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46 | otherwise |
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47 | error('SDPVAR/LOG called with CHAR argument?'); |
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48 | end |
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49 | otherwise |
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50 | error('SDPVAR/LOG called with CHAR argument?'); |
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51 | end |
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