41 lines
1.0 KiB
Matlab
Executable File
41 lines
1.0 KiB
Matlab
Executable File
function LU = getbounds(F)
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K.f = 0;
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K.l = 0;
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L = [];
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U = [];
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LU = yalmip('getbounds',1:yalmip('nvars'));
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F = flatten(F);
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for i = 1:length(F.clauses)
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if F.clauses{i}.type == 2
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X = F.clauses{i}.data;
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AB = getbase(X);
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K.l = prod(size(X));
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variables = getvariables(X);
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[lb,ub,cand_rows] = findulb(AB,K);
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LU(variables,1) = max([lb LU(variables,1)]')';
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LU(variables,2) = min([ub LU(variables,2)]')';
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elseif F.clauses{i}.type == 3
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% FIX : Extract from equalities and binary constraints
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end
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end
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binary = yalmip('binvariables');
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LU(binary,1) = 0;
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LU(binary,2) = 1;
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% Try to bound some nonlinear terms
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% FIX: complete code
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[mt,variable_type] = yalmip('monomtable');
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quadratic = find(variable_type == 2);
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if ~isempty(quadratic)
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M = mt(quadratic,:);
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for i = 1:size(M,1)
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[ii,jj] = find(M(i,:));
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if length(ii) == 1
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LU(quadratic(i),1) = min([0 LU(jj,1)^2]);
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LU(quadratic(i),2) = max([LU(jj,1)^2 LU(jj,2)^2]);
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end
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end
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end
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