Mercurial > octave-nkf
view scripts/signal/sinc.m @ 20596:87b557ee8e5d
clean up and vectorize code for dense output in ode45
* scripts/ode/private/ode_rk_interpolate.m: new file
* scripts/ode/private/ode_rk_interpolate.m(hermite_quartic_interpolation):
move to internal function, use vectorization and broadcasting.
* scripts/ode/private/hermite_quartic_interpolation.m: remove file
* scripts/ode/module.mk: list added and removed files
* scripts/ode/private/integrate_adaptive.m: use new interpolation code.
author | Carlo de Falco <carlo.defalco@polimi.it> |
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date | Tue, 06 Oct 2015 19:28:59 +0200 |
parents | b0f7ee81d974 |
children |
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## Copyright (C) 1994-2015 John W. Eaton ## ## 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 {Function File} {} sinc (@var{x}) ## Compute the sinc function. ## ## Return ## @tex ## $ \sin (\pi x)/(\pi x)$. ## @end tex ## @ifnottex ## sin (pi*x) / (pi*x). ## @end ifnottex ## @end deftypefn ## Author: jwe ??? function result = sinc (x) if (nargin != 1) print_usage (); endif result = ones (size (x)); i = (x != 0); if (any (i(:))) t = pi * x(i); result(i) = sin (t) ./ t; endif endfunction %!assert (sinc (0), 1) %!assert (sinc (1), 0,1e-6) %!assert (sinc (1/2), 2/pi, 1e-6) %!error sinc()