Rev | Line | |
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[37] | 1 | function y = rdivide(X,Y) |
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| 2 | %RDIVIDE (overloaded) |
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| 3 | |
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| 4 | % Author Johan Löfberg |
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| 5 | % $Id: rdivide.m,v 1.7 2006/01/26 13:44:13 joloef Exp $ |
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| 6 | |
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| 7 | % Check dimensions |
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| 8 | [nx,mx] = size(X); |
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| 9 | [ny,my] = size(Y); |
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| 10 | if ~((prod(size(X))==1) | (prod(size(Y))==1)) |
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| 11 | if ~((nx==ny & (mx ==my))) |
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| 12 | error('Matrix dimensions must agree.') |
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| 13 | end |
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| 14 | end |
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| 15 | |
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| 16 | % Quick exit for simple case X/scalar |
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| 17 | if isa(Y,'double') & prod(size(Y))==1 |
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| 18 | y = X; |
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| 19 | y.basis = y.basis/Y; |
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| 20 | % Reset info about conic terms |
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| 21 | y.conicinfo = [0 0]; |
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| 22 | return |
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| 23 | end |
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| 24 | |
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| 25 | % FIX : SLOOOOW BUT SOMEWHAT ROBUST |
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| 26 | [nx,mx] = size(X); |
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| 27 | [ny,my] = size(Y); |
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| 28 | if prod(size(X)) == 1 & prod(size(Y))~=1 |
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| 29 | X = repmat(X,ny,my); |
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| 30 | end; |
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| 31 | if prod(size(Y)) == 1 & prod(size(X))~=1 |
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| 32 | Y = repmat(Y,nx,mx); |
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| 33 | end; |
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| 34 | [nx,mx] = size(X); |
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| 35 | y = []; |
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| 36 | for i = 1:nx |
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| 37 | if mx==1 |
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| 38 | dummy = struct('type','()','subs',{{i,1}}); |
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| 39 | y=[y;subsref(X,dummy)*subsref(Y,dummy)^-1]; |
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| 40 | else |
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| 41 | ytemp = []; |
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| 42 | for j = 1:mx |
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| 43 | dummy = struct('type','()','subs',{{i,j}}); |
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| 44 | ytemp = [ytemp subsref(X,dummy)*subsref(Y,dummy)^-1]; |
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| 45 | end |
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| 46 | y = [y;ytemp]; |
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| 47 | end |
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| 48 | end |
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| 49 | % Reset info about conic terms |
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| 50 | if isa(y,'sdpvar') |
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| 51 | y.conicinfo = [0 0]; |
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| 52 | end |
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