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## Copyright (C) 1996, 2000, 2002, 2003, 2004, 2005, 2007
## Auburn University. All rights reserved.
##
##
## 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; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} is_sample (@var{ts})
## Return true if @var{ts} is a valid sampling time
## (real, scalar, > 0).
## @end deftypefn
## Author: A. S. Hodel <a.s.hodel@eng.auburn.edu>
## Created: July 1995
function out = is_sample (Ts)
if (nargin != 1)
print_usage ();
endif
out = (isscalar (Ts) && (Ts == abs (Ts)) && (Ts != 0));
endfunction
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