34 lines
1.0 KiB
Mathematica
34 lines
1.0 KiB
Mathematica
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function varargout = eig_yalmip_internal(varargin)
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switch class(varargin{1})
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case 'double'
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X = varargin{1}(:);
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n = sqrt(length(X));
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X = reshape(X,n,n);
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varargout{1} = eig((X+X')/2);
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case 'sdpvar' % Overloaded operator for SDPVAR objects. Pass on args and save them.
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x = varargin{1};
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y = yalmip('definemulti',mfilename,x,[size(x,1) 1]);
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varargout{1} = y;
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case 'char' % YALMIP send 'graph' when it wants the epigraph or hypograph
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% disp('The EIG operator is not supported in optimization problems.')
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% error
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t = varargin{2};
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X = varargin{3};
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varargout{1} = [];
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varargout{2} = struct('convexity','none','monotonicity','none','definiteness','none','model','callback');
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varargout{3} = X;
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% Inofficial way to model several nonlinear variables in
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% one call
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% varargout{2}.models = getvariables(t):getvariables(t)+length(X)-1;
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otherwise
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error('Strange type on first argument in SDPVAR/EIG');
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end
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