Rev | Line | |
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[37] | 1 | function product=prod(X) |
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| 2 | %PROD (overloaded) |
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| 3 | |
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| 4 | % Author Johan L÷fberg |
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| 5 | % $Id: prod.m,v 1.3 2005/12/05 15:56:30 joloef Exp $ |
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| 6 | |
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| 7 | |
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| 8 | % n = length(X); |
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| 9 | % switch n |
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| 10 | % case 1 |
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| 11 | % product = X; |
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| 12 | % case 2 |
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| 13 | % x1 = extsubsref(X,1); |
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| 14 | % x2 = extsubsref(X,2); |
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| 15 | % product = x1*x2; |
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| 16 | % case 3 |
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| 17 | % x1 = extsubsref(X,1); |
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| 18 | % x2 = extsubsref(X,2); |
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| 19 | % x3 = extsubsref(X,3); |
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| 20 | % product = x1*x2*x3; |
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| 21 | % |
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| 22 | % otherwise |
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| 23 | % m = floor(length(X)/2); |
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| 24 | % x1 = extsubsref(X,1:m); |
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| 25 | % x2 = extsubsref(X,m+1:n); |
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| 26 | % product = prod(x1)*prod(x2); |
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| 27 | % end |
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| 28 | % |
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| 29 | product = 1; |
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| 30 | for i = 1:length(X) |
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| 31 | pick = cell(1,1);pick{1}={i}; |
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| 32 | product = product*subsref(X,struct('type','()','subs',pick)); |
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| 33 | end |
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