### 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.

## usage: rem (x, y)
##
## Return remainder (x, y).

function retval = rem (x, y)

  if (nargin != 2)
    usage ("rem (x, y)");
  endif

  if (any (size (x) != size (y)) && ! (is_scalar (x) || is_scalar (y)))
    error ("rem: argument sizes must agree");
  endif

  ## Matlab allows complex arguments, but as far as I can tell, that's a
  ## bunch of hooey.

  if (any (any (imag (x))) || any (any (imag (y))))
    error ("rem: complex arguments are not allowed");
  endif

  if (nargin == 2)
    retval = x - y .* fix (x ./ y);
  else
    error ("usage: rem (x, y)");
  endif

endfunction