--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fft2.cc	Thu Sep 08 04:42:58 1994 +0000
@@ -0,0 +1,118 @@
+// f-fft2.cc                                           -*- C++ -*-
+/*
+
+Copyright (C) 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "dMatrix.h"
+#include "CMatrix.h"
+
+#include "tree-const.h"
+#include "user-prefs.h"
+#include "gripes.h"
+#include "error.h"
+#include "utils.h"
+#include "help.h"
+#include "defun-dld.h"
+
+// This function should be merged with Fifft2.
+
+DEFUN_DLD ("fft2", Ffft2, Sfft2, 3, 1,
+  "fft2 (X [, N] [, M])\n\
+\n\
+two dimensional fast fourier transform of a vector")
+{
+  Octave_object retval;
+
+  int nargin = args.length ();
+
+  if (nargin < 2 || nargin > 4)
+    {
+      print_usage ("fft2");
+      return retval;
+    }
+
+  tree_constant arg = args(1);
+
+  int n_rows = arg.rows ();
+  if (nargin > 2)
+    n_rows = NINT (args(2).double_value ());
+
+  if (error_state)
+    return retval;
+
+  int n_cols = arg.columns ();
+  if (nargin > 3)
+    n_cols = NINT (args(3).double_value ());
+
+  if (error_state)
+    return retval;
+
+  if (n_rows < 0 || n_cols < 0)
+    {
+      error ("fft2: number of points must be greater than zero");
+      return retval;
+    }
+
+  int arg_is_empty = empty_arg ("fft2", arg.rows (), arg.columns ());
+
+  if (arg_is_empty < 0)
+    return retval;
+  else if (arg_is_empty || n_rows == 0 || n_cols == 0)
+    return Matrix ();
+
+  if (arg.is_real_type ())
+    {
+      Matrix m = arg.matrix_value ();
+
+      if (! error_state)
+	{
+	  m.resize (n_rows, n_cols, 0.0);
+	  retval = m.fourier2d ();
+	}
+    }
+  else if (arg.is_complex_type ())
+    {
+      ComplexMatrix m = arg.complex_matrix_value ();
+
+      if (! error_state)
+	{
+	  m.resize (n_rows, n_cols, 0.0);
+	  retval = m.fourier2d ();
+	}
+    }
+  else
+    {
+      gripe_wrong_type_arg ("fft2", arg);
+    }
+
+  return retval;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ifft2.cc	Thu Sep 08 04:42:58 1994 +0000
@@ -0,0 +1,118 @@
+// f-ifft2.cc                                           -*- C++ -*-
+/*
+
+Copyright (C) 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "dMatrix.h"
+#include "CMatrix.h"
+
+#include "tree-const.h"
+#include "user-prefs.h"
+#include "gripes.h"
+#include "error.h"
+#include "utils.h"
+#include "help.h"
+#include "defun-dld.h"
+
+// This function should be merged with Ffft2.
+
+DEFUN_DLD ("ifft2", Fifft2, Sifft2, 3, 1,
+  "ifft2 (X [, N] [, M])\n\
+\n\
+two dimensional inverse fast fourier transform of a vector") 
+{
+  Octave_object retval;
+
+  int nargin = args.length ();
+
+  if (nargin < 2 || nargin > 4)
+    {
+      print_usage ("ifft2");
+      return retval;
+    }
+
+  tree_constant arg = args(1);
+
+  int n_rows = arg.rows ();
+  if (nargin > 2)
+    n_rows = NINT (args(2).double_value ());
+
+  if (error_state)
+    return retval;
+
+  int n_cols = arg.columns ();
+  if (nargin > 3)
+    n_cols = NINT (args(3).double_value ());
+
+  if (error_state)
+    return retval;
+
+  if (n_rows < 0 || n_cols < 0)
+    {
+      error ("ifft2: number of points must be greater than zero");
+      return retval;
+    }
+
+  int arg_is_empty = empty_arg ("ifft2", arg.rows (), arg.columns ());
+
+  if (arg_is_empty < 0)
+    return retval;
+  else if (arg_is_empty || n_rows == 0 || n_cols == 0)
+    return Matrix ();
+
+  if (arg.is_real_type ())
+    {
+      Matrix m = arg.matrix_value ();
+
+      if (! error_state)
+	{
+	  m.resize (n_rows, n_cols, 0.0);
+	  retval = m.ifourier2d ();
+	}
+    }
+  else if (arg.is_complex_type ())
+    {
+      ComplexMatrix m = arg.complex_matrix_value ();
+
+      if (! error_state)
+	{
+	  m.resize (n_rows, n_cols, 0.0);
+	  retval = m.ifourier2d ();
+	}
+    }
+  else
+    {
+      gripe_wrong_type_arg ("ifft2", arg);
+    }
+
+  return retval;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/