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1 ## Copyright (C) 1996, 1998 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 ## -*- texinfo -*- |
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20 ## @deftypefn {Function File} {[a, b] =} zgsgiv (@var{c}, @var{s}, @var{a}, @var{b}) |
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21 ## Apply givens rotation c,s to row vectors @var{a}, @var{b}. |
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22 ## No longer used in zero-balancing (__zgpbal__); kept for backward |
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23 ## compatibility. |
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24 ## @end deftypefn |
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25 |
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26 ## Author: A. S. Hodel <a.s.hodel@eng.auburn.edu> |
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27 ## Created: July 29, 1992 |
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28 ## Convertion to Octave by R. Bruce Tenison July 3, 1994 |
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29 |
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30 function [a, b] = zgsgiv (c, s, a, b) |
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31 |
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32 t1 = c*a + s*b; |
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33 t2 = -s*a + c*b; |
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34 a = t1; |
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35 b = t2; |
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36 |
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37 endfunction |
