## Copyright (C) 2000 Paul Kienzle
##
## 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.

## -*- texinfo -*-
## @deftypefn {Function File} {} repmat (@var{A}, @var{m}, @var{n})
## @deftypefnx {Function File} {} repmat (@var{A}, [@var{m} @var{n}])
## Form a block matrix of size @var{m} by @var{n}, with a copy of matrix
## @var{A} as each element.  If @var{n} is not specified, form an 
## @var{m} by @var{m} block matrix.
## @end deftypefn

## Author: Paul Kienzle <pkienzle@kienzle.powernet.co.uk>
## Created: July 2000

function x = repmat (a, m, n)

  if (nargin < 2 || nargin > 3)
    usage ("repmat (a, m, n)");
  endif

  if (nargin == 2)
    if (isscalar (m))
      n = m;
    elseif (isvector (m) && length (m) == 2)
      n = m(2);
      m = m(1);
    else
      error ("repmat: only builds 2D matrices")
    endif
  endif

  if (isstr (a))
    x = setstr (kron (ones (m, n), toascii (a)));
  else
    x = kron (ones (m, n), a);
  endif

endfunction