X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fspecfun-1.1.0%2Fdirac.m;fp=octave_packages%2Fspecfun-1.1.0%2Fdirac.m;h=8e428748169622ff2edfbdabdef47e4fa5561c01;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/specfun-1.1.0/dirac.m b/octave_packages/specfun-1.1.0/dirac.m
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+## Copyright (C) 2006   Sylvain Pelissier   <sylvain.pelissier@gmail.com>
+##
+## This program 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.
+##
+## This program 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 this program; If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{y} =} dirac(@var{x})
+## Compute the dirac delta function.
+## @seealso{heaviside}
+## @end deftypefn
+
+function y = dirac(x)
+  if (nargin != 1)
+    print_usage;
+  endif
+  y = double(x == 0.);
+  y(x == 0) = Inf;
+endfunction