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diff --git a/sc4pd/source/support.hpp b/sc4pd/source/support.hpp
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+/* sc4pd: 
+   support functions
+   
+   Copyright (c) 2004 Tim Blechmann.                                       
+
+   This code is derived from:
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+   This program 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
+   of the License, or (at your option) any later version.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+   Based on:
+     PureData by Miller Puckette and others.
+         http://www.crca.ucsd.edu/~msp/software.html
+     FLEXT by Thomas Grill
+         http://www.parasitaere-kapazitaeten.net/ext
+     SuperCollider by James McCartney
+         http://www.audiosynth.com
+     
+   Coded while listening to: Phosphor
+   
+*/
+
+#ifndef _SUPPORT_HPP
+#define _SUPPORT_HPP
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+
+/* for argument parsing */
+bool sc_add (flext::AtomList& a);
+float sc_getfloatarg (flext::AtomList& a,int i);
+bool sc_ar(flext::AtomList& a);
+bool sc_inv(flext::AtomList& a);
+
+
+/* for rngs */
+
+// macros to put rgen state in registers
+#define RGET \
+	uint32 s1 = rgen.s1; \
+	uint32 s2 = rgen.s2; \
+	uint32 s3 = rgen.s3; 
+
+#define RPUT \
+	rgen.s1 = s1; \
+	rgen.s2 = s2; \
+	rgen.s3 = s3;
+
+int32 timeseed();
+
+/* cubic interpolation from DelayUGens.cpp */
+inline float cubicinterp(float x, float y0, float y1, float y2, float y3)
+{
+	// 4-point, 3rd-order Hermite (x-form)
+	float c0 = y1;
+	float c1 = 0.5f * (y2 - y0);
+	float c2 = y0 - 2.5f * y1 + 2.f * y2 - 0.5f * y3;
+	float c3 = 0.5f * (y3 - y0) + 1.5f * (y1 - y2);
+
+	return ((c3 * x + c2) * x + c1) * x + c0;
+}
+
+/* feedback calculation from DelayUGens.cpp */
+inline float CalcFeedback(float delaytime, float decaytime)
+{
+	if (delaytime == 0.f) {
+		return 0.f;
+	} else if (decaytime > 0.f) {
+		return exp(log001 * delaytime / decaytime);
+	} else if (decaytime < 0.f) {
+		return -exp(log001 * delaytime / -decaytime);
+	} else {
+		return 0.f;
+	}
+}
+
+
+/* this is adapted from thomas grill's xsample:
+xsample - extended sample objects for Max/MSP and pd (pure data)
+
+Copyright (c) 2001-2004 Thomas Grill (xovo@gmx.net)
+For information on usage and redistribution, and for a DISCLAIMER OF ALL
+WARRANTIES, see the file, "license.txt," in this distribution.  
+*/
+
+#define SETSIGFUN(VAR,FUN) v_##VAR = FUN
+
+#define DEFSIGFUN(NAME)	void NAME(int n,t_sample *const *in,t_sample *const *out)
+
+#define DEFSIGCALL(NAME) \
+	inline void NAME(int n,t_sample *const *in,t_sample *const *out) \
+        { (this->*v_##NAME)(n,in,out); } \
+	void (thisType::*v_##NAME)(int n,t_sample *const *invecs,t_sample *const *outvecs)
+
+#define SIGFUN(FUN) &thisType::FUN
+
+
+/* from Convolution.cpp */
+void init_ffts();
+float* create_fftwindow(int log2n);
+float* create_cosTable(int log2n);
+void DoWindowing(int log2n, float * fftbuf, int bufsize);
+
+#endif