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pascal.m: permutation compatibility with Matlab for n=2; fixed n=0 case (Bug #34365) * pascal.m: permutation compatibility with Matlab for n=2; fixed n=0 case (Bug #34365)
author Vanya Sergeev <vsergeev@gmail.com>
date Fri, 23 Sep 2011 05:13:01 -0400
parents fd0a3ac60b0e
children 72c96de7a403
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fd0a3ac60b0e update copyright notices
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2006-2011 David Bateman
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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} {} cotd (@var{x})
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21 ## Compute the cotangent for each element of @var{x} in degrees.
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22 ## @seealso{acotd, cot}
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23 ## @end deftypefn
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24
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25 ## Author: David Bateman <dbateman@free.fr>
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26
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27 function y = cotd (x)
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28 if (nargin != 1)
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29 print_usage ();
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30 endif
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31 y = 1 ./ tand (x);
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32 endfunction
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33
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34 %!error(cotd())
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35 %!error(cotd(1,2))
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36 %!assert(cotd(10:10:80),cot(pi*[10:10:80]/180),-10*eps)
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37 %!assert(cotd([0,180,360]) == Inf)
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38 %!assert(cotd([90,270]) == 0)