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## Copyright (C) 1996 John W. Eaton
##
## 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
## 02111-1307, USA.
## postpad (x, l)
##
## Appends zeros to the vector x until it is of length l.
## postpad (x, l, c) appends the constant c instead of zero.
##
## If length (x) > l, elements from the end of x are removed
## until a vector of length l is obtained.
function y = postpad (x, l, c)
## Author:
## Tony Richardson
## amr@mpl.ucsd.edu
## June 1994
if (nargin == 2)
c = 0;
elseif (nargin < 2 || nargin > 3)
usage ("postpad (x, l) or postpad (x, l, c)");
endif
if (! is_vector (x))
error ("first argument must be a vector");
elseif (! is_scalar (l))
error ("second argument must be a scaler");
endif
if (l < 0)
error ("second argument must be non-negative");
endif
lx = length (x);
if (lx >= l)
y = x(1:l);
else
if (rows (x) > 1)
tmp = c * ones (l-lx, 1);
y = [x; tmp];
else
tmp = c * ones (1, l-lx);
y = [x, tmp];
endif
endif
endfunction
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.