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1 ## Copyright (C) 1996 Auburn University. All rights reserved. |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 3 of the License, or (at |
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8 ## your option) any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, see |
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17 ## <http://www.gnu.org/licenses/>. |
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18 |
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19 ## O B S O L E T E: use ss instead. |
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20 ## function Asys = packsys(a,b,c[,d,dflg]) |
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21 ## |
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22 ## dflg: 0 for continuous time system, 1 for discrete-time system. |
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23 ## |
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24 ## defaults: |
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25 ## D: 0 matrix of appropriate dimension. |
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26 ## dflg: 0 (continuous time) |
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27 ## |
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28 ## Note: discrete-state sampling time is not included! |
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29 |
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30 ## Author: R. Bruce Tenison <btenison@eng.auburn.edu> |
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31 ## Created: July 29, 1994 |
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32 ## Modified by David Clem November 13, 1994 |
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33 ## Modified by A. S. Hodel April 1995 |
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34 |
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35 function Asys = packsys (a, b, c, d, dflg) |
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36 |
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37 warning("packsys is obsolete! Use ss instead."); |
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38 |
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39 if (nargin < 3 || nargin > 5) |
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40 disp("packsys: Invalid number of arguments") |
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41 endif |
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42 |
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43 ## check dflg |
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44 if(nargin == 5) |
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45 if( !isscalar(dflg)) |
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46 [m,n] = size(dflg); |
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47 error(["packsys: dflg (",num2str(m),",",num2str(n), ... |
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48 ") must be a scalar."]); |
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49 elseif( (dflg != 0) && (dflg != 1)) |
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50 error(["packsys: dflg=",num2str(dflg),"must be 0 or 1"]); |
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51 endif |
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52 else |
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53 ## default condition |
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54 dflg = 0; |
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55 endif |
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56 |
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57 if (nargin == 3) |
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58 ## No D matrix. Form a zero one! |
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59 [brows,bcols] = size(b); |
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60 [crows,ccols] = size(c); |
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61 d = zeros(crows,bcols); |
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62 endif |
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63 |
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64 [n,m,p] = abcddim(a,b,c,d); |
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65 if (n == -1 || m == -1 || p == -1) |
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66 error("packsys: incompatible dimensions") |
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67 endif |
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68 |
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69 Asys = ss(a,b,c,d,dflg); |
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70 |
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71 endfunction |
