--- /dev/null
+## Copyright (C) 2011 David Bateman
+##
+## 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 {Loadable Function} {} sumsq (@var{x}, @var{dim})
+## Sum of squares of elements along dimension @var{dim} of Galois array.
+## If @var{dim} is omitted, it defaults to 1 (column-wise sum of squares).
+##
+## This function is equivalent to computing
+## @example
+## gsum (x .* conj (x), dim)
+## @end example
+## but it uses less memory.
+## @end deftypefn
+
+function varargout = sumsq (varargin)
+ varargout = cell (1, max(1, nargout));
+ [varargout{:}] = gsumsq (varargin{:});
+endfunction