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zgrownor.m
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1999-12-24
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## Copyright (C) 1996 Auburn University. All Rights Reserved
##
## 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 2, 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, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
## -*- texinfo -*-
## @deftypefn {Function File } { [@var{nonz}, @var{zer}] =} zgrownor (@var{mat}, @var{meps})
## returns @var{nonz} = number of rows of @var{mat} whose two norm exceeds @var{meps}
## @var{zer} = number of rows of mat whose two norm is less than meps
## @end deftypefn
function [sig, tau] = zgrownor (mat, meps)
rownorm = [];
for ii=1:rows(mat)
rownorm(ii) = norm(mat(ii,:));
endfor
sig = sum(rownorm > meps);
tau = sum(rownorm <= meps);
endfunction