Mercurial > octave-nkf
annotate scripts/elfun/atand.m @ 20614:10ec79b47808
use new string_value method to handle value extraction errors
* __voronoi__.cc, chol.cc, colamd.cc, fftw.cc:
Use new string_value method.
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 08 Oct 2015 18:15:56 -0400 |
parents | 4197fc428c7d |
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maint: Update copyright notices for 2015.
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2006-2015 David Bateman |
6239 | 2 ## |
6440 | 3 ## This file is part of Octave. |
6239 | 4 ## |
6440 | 5 ## Octave is free software; you can redistribute it and/or modify it |
6 ## under the terms of the GNU General Public License as published by | |
7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
8 ## your option) any later version. | |
6440 | 9 ## |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 ## General Public License for more details. | |
6239 | 14 ## |
15 ## You should have received a copy of the GNU General Public License | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
17 ## <http://www.gnu.org/licenses/>. | |
6239 | 18 |
19 ## -*- texinfo -*- | |
20 ## @deftypefn {Function File} {} atand (@var{x}) | |
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Update section 17.3 (Trigonometry) of arith.txi
Rik <rdrider0-list@yahoo.com>
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21 ## Compute the inverse tangent in degrees for each element of @var{x}. |
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Rik <rdrider0-list@yahoo.com>
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22 ## @seealso{tand, atan} |
6239 | 23 ## @end deftypefn |
24 | |
7017 | 25 ## Author: David Bateman <dbateman@free.fr> |
26 | |
6239 | 27 function y = atand (x) |
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Rik <octave@nomad.inbox5.com>
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28 |
6239 | 29 if (nargin != 1) |
30 print_usage (); | |
31 endif | |
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Rik <octave@nomad.inbox5.com>
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32 |
6239 | 33 y = 180 ./ pi .* atan (x); |
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34 |
6239 | 35 endfunction |
36 | |
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37 |
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38 %!assert (atand (0:10:90), 180/pi * atan (0:10:90), -10*eps) |
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Rik <octave@nomad.inbox5.com>
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39 |
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Rik <octave@nomad.inbox5.com>
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40 %!error atand () |
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41 %!error atand (1, 2) |
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42 |