Mercurial > octave
view scripts/general/deg2rad.m @ 23219:3ac9f9ecfae5 stable
maint: Update copyright dates.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 22 Feb 2017 12:39:29 -0500 |
parents | e9a0469dedd9 |
children | 092078913d54 |
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## Copyright (C) 2016-2017 Rik Wehbring ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {@var{rad} =} deg2rad (@var{deg}) ## ## Convert degrees to radians. ## ## The input @var{deg} must be a scalar, vector, or N-dimensional array of ## double or single floating point values. @var{deg} may be complex in which ## case the real and imaginary components are converted separately. ## ## The output @var{rad} is the same size and shape as @var{deg} with degrees ## converted to radians using the conversion constant @code{pi/180}. ## ## Example: ## ## @example ## @group ## deg2rad ([0, 90, 180, 270, 360]) ## @result{} 0.00000 1.57080 3.14159 4.71239 6.28319 ## @end group ## @end example ## @seealso{rad2deg} ## @end deftypefn function rad = deg2rad (deg) if (nargin != 1) print_usage (); endif if (! isfloat (deg)) error ("deg2rad: DEG must be a floating point class (double or single)"); endif rad = deg * (pi / 180); endfunction %!assert (deg2rad (0), 0) %!assert (deg2rad (90), pi/2) %!assert (deg2rad (180), pi) %!assert (deg2rad ([0, 90, 180, 270, 360]), pi*[0, 1/2, 1, 3/2, 2]) ## Test input validation %!error deg2rad () %!error deg2rad (1, 2) %!error <DEG must be a floating point class> deg2rad (uint8 (1)) %!error <DEG must be a floating point class> deg2rad ("A")