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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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