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zgrownorm.m
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1999-03-05
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# Copyright (C) 1996 A. Scottedward Hodel
#
# 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, 675 Mass Ave, Cambridge, MA 02139, USA.
function [sig, tau] = zgrownorm(mat,meps)
# function [nonz, zer] = zgrownorm(mat,meps)
# used internally in tzero
# returns nonz = number of rows of mat whose two norm exceeds meps
# zer = number of rows of mat whose two norm is less than meps
rownorm = [];
for ii=1:rows(mat)
rownorm(ii) = norm(mat(ii,:));
endfor
sig = sum(rownorm > meps);
tau = sum(rownorm <= meps);
endfunction