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[37] | 1 | function Y = uminus(Y) |
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| 2 | %UMINUS (overloaded) |
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| 3 | |
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| 4 | % Author Johan Löfberg |
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| 5 | % $Id: uminus.m,v 1.1 2006/08/10 18:00:23 joloef Exp $ |
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| 6 | |
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| 7 | if isa(Y,'blkvar') |
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| 8 | Y = sdpvar(Y); |
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| 9 | end |
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| 10 | |
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| 11 | switch Y.typeflag |
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| 12 | case {0,1,2,3,4} |
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| 13 | Y.basis = -Y.basis; |
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| 14 | %case {1,3,4} |
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| 15 | %error('Relational objects canot be manipulated') |
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| 16 | case 9 |
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| 17 | Y.extra.M = -Y.extra.M; |
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| 18 | Y.extra.negated = ~Y.extra.negated; |
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| 19 | case 5 |
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| 20 | error('Cone object cannot be negated'); |
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| 21 | otherwise |
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| 22 | end |
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| 23 | % Reset info about conic terms |
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| 24 | Y.conicinfo = [0 0]; |
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| 25 | |
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| 26 | |
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