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Sourcecode: octave-specfun version File versions

heaviside.m

## 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 2 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} {} heaviside(@var{x})
## Compute the heaviside step function.
## @seealso{dirac}
## @end deftypefn

function y = heaviside(x)
            if (nargin != 1)
                  usage ("heaviside(x)");
         endif
            y = double(x>0);
      y(x==0) = NaN; 
endfunction;

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