diff -r 89e065397ea6 -r e24348a560a6 demos/spectrum/3rdparty/fftreal/test_fnc.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/spectrum/3rdparty/fftreal/test_fnc.hpp	Fri Jun 11 14:24:45 2010 +0300
@@ -0,0 +1,56 @@
+/*****************************************************************************
+
+        test_fnc.hpp
+        Copyright (c) 2005 Laurent de Soras
+
+--- Legal stuff ---
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*Tab=3***********************************************************************/
+
+
+
+#if defined (test_fnc_CURRENT_CODEHEADER)
+	#error Recursive inclusion of test_fnc code header.
+#endif
+#define	test_fnc_CURRENT_CODEHEADER
+
+#if ! defined (test_fnc_CODEHEADER_INCLUDED)
+#define	test_fnc_CODEHEADER_INCLUDED
+
+
+
+/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+template <class T>
+T	limit (const T &x, const T &inf, const T &sup)
+{
+	assert (! (sup < inf));
+
+	return ((x < inf) ? inf : ((sup < x) ? sup : x));
+}
+
+
+
+#endif	// test_fnc_CODEHEADER_INCLUDED
+
+#undef test_fnc_CURRENT_CODEHEADER
+
+
+
+/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/