Index: mttroot/mtt/lib/rep/sfun_rep/Makefile
==================================================================
--- mttroot/mtt/lib/rep/sfun_rep/Makefile
+++ mttroot/mtt/lib/rep/sfun_rep/Makefile
@@ -1,45 +1,45 @@
 #! /usr/bin/make -f
 
 all: $(SYS)_sfun.mexglx
 
-$(SYS)_sfun.mexglx: $(SYS)_sfun.c sfun_debug.h $(SYS)_def.h $(SYS)_sympar.h $(SYS)_numpar.c $(SYS)_ode.c $(SYS)_odeo.c $(SYS)_state.c $(SYS)_sfun_ae.mexglx $(SYS)_sfun_input.mexglx $(SYS)_sfun_interface.mexglx $(SYS).mdl
+$(SYS)_sfun.mexglx: $(SYS)_sfun.c sfun_debug.h useful-functions.hh $(SYS)_def.h $(SYS)_sympar.h $(SYS)_numpar.c $(SYS)_ode.c $(SYS)_odeo.c $(SYS)_state.c $(SYS)_sfun_ae.mexglx $(SYS)_sfun_input.mexglx $(SYS)_sfun_interface.mexglx $(SYS).mdl
 	echo Creating $@
 	mex $(SYS)_sfun.c
 	cp *_sfun*mexglx $(SYS).mdl ..
 
 $(SYS)_sfun.c:: ${MTT_REP}/sfun_rep/sfun.c.tmpl
 	echo Creating $@
 	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@
 
-$(SYS)_sfun_ae.mexglx: $(SYS)_sfun_ae.c $(SYS)_def.h $(SYS)_sympar.h $(SYS)_ae.c
+$(SYS)_sfun_ae.mexglx: $(SYS)_sfun_ae.c sfun-debug.h useful-functions.hh $(SYS)_def.h $(SYS)_sympar.h $(SYS)_ae.c
 	echo Creating $@
 	mex $(SYS)_sfun_ae.c
 
 $(SYS)_sfun_ae.c:: ${MTT_REP}/sfun_rep/mex_ae.c.tmpl
 	echo Creating $@
 	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@
 
-$(SYS)_sfun_input.mexglx: $(SYS)_sfun_input.c sfun_debug.h $(SYS)_def.h $(SYS)_sympar.h $(SYS)_input.c $(SYS)_numpar.c
+$(SYS)_sfun_input.mexglx: $(SYS)_sfun_input.c sfun_debug.h useful-functions.hh $(SYS)_def.h $(SYS)_sympar.h $(SYS)_input.c $(SYS)_numpar.c
 	echo Creating $@
 	mex $(SYS)_sfun_input.c
 
 $(SYS)_sfun_input.c:: ${MTT_REP}/sfun_rep/sfun_input.c.tmpl
 	echo Creating $@
 	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@
 
-$(SYS)_sfun_interface.mexglx: $(SYS)_sfun_interface.c sfun_debug.h $(SYS)_def.h $(SYS)_sympar.h $(SYS)_numpar.c
+$(SYS)_sfun_interface.mexglx: $(SYS)_sfun_interface.c sfun_debug.h useful-functions.hh $(SYS)_def.h $(SYS)_sympar.h $(SYS)_numpar.c
 	echo Creating $@
 	mex $(SYS)_sfun_interface.c
 
 $(SYS)_sfun_interface.c: ${MTT_REP}/sfun_rep/sfun_interface.c.tmpl $(SYS)_struc.c
 	echo Creating $@
 	cat ${MTT_REP}/sfun_rep/sfun_interface.c.tmpl	|\
 	 sed 's/<mtt_model_name>/$(SYS)/g'		|\
 	 ${MTT_REP}/sfun_rep/insert_file.sh > $@
 
-$(SYS)_sfun.zip: $(SYS)_sfun.c sfun_debug.h $(SYS)_sfun_ae.c $(SYS)_sfun_input.c $(SYS)_sfun_interface.c \
+$(SYS)_sfun.zip: $(SYS)_sfun.c sfun_debug.h useful-functions.hh $(SYS)_sfun_ae.c $(SYS)_sfun_input.c $(SYS)_sfun_interface.c \
 	 $(SYS)_def.h $(SYS)_sympar.h \
 	 $(SYS)_ae.c $(SYS)_input.c $(SYS)_numpar.c $(SYS)_ode.c $(SYS)_odeo.c $(SYS)_state.c \
 	 $(SYS).mdl README
 	echo Creating $@
 	zip $@ $^
@@ -86,8 +86,12 @@
 	' $^ > $@
 
 sfun_debug.h:: ${MTT_REP}/sfun_rep/sfun_debug.h
 	echo Copying $@
 	cp $^ $@
+
+useful-functions.hh:: ${MTT_CC}/include/useful-functions.hh
+	echo Copying $@
+	cp $^ $@
 
 %::
 	mtt -q $(OPTS) `echo $* | sed 's/\(.*\)_\(.*\)\.\(.*\)/\1 \2 \3/'`

Index: mttroot/mtt/lib/rep/sfun_rep/mex_ae.c.tmpl
==================================================================
--- mttroot/mtt/lib/rep/sfun_rep/mex_ae.c.tmpl
+++ mttroot/mtt/lib/rep/sfun_rep/mex_ae.c.tmpl
@@ -6,10 +6,11 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <mex.h>
 #include "sfun_debug.h"
+#include "useful-functions.hh"
 #include "<mtt_model_name>_def.h"
 #include "<mtt_model_name>_sympar.h"
 
 /* utility procedures */
 

Index: mttroot/mtt/lib/rep/sfun_rep/sfun.c.tmpl
==================================================================
--- mttroot/mtt/lib/rep/sfun_rep/sfun.c.tmpl
+++ mttroot/mtt/lib/rep/sfun_rep/sfun.c.tmpl
@@ -9,10 +9,11 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "simstruc.h"
 #include "sfun_debug.h"
+#include "useful-functions.hh"
 #include "<mtt_model_name>_def.h"
 #include "<mtt_model_name>_sympar.h"
 
 static double *mttdx;		/* pointer to rates */
 static double *mttu;		/* pointer to inputs */

Index: mttroot/mtt/lib/rep/sfun_rep/sfun_input.c.tmpl
==================================================================
--- mttroot/mtt/lib/rep/sfun_rep/sfun_input.c.tmpl
+++ mttroot/mtt/lib/rep/sfun_rep/sfun_input.c.tmpl
@@ -9,10 +9,11 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "simstruc.h"
 #include "sfun_debug.h"
+#include "useful-functions.hh"
 #include "<mtt_model_name>_def.h"
 #include "<mtt_model_name>_sympar.h"
 
 static double *mttu;		/* pointer to inputs */
 static double *mttpar;		/* pointer to parameters */

Index: mttroot/mtt/lib/rep/sfun_rep/sfun_interface.c.tmpl
==================================================================
--- mttroot/mtt/lib/rep/sfun_rep/sfun_interface.c.tmpl
+++ mttroot/mtt/lib/rep/sfun_rep/sfun_interface.c.tmpl
@@ -10,10 +10,11 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "simstruc.h"
 #include "sfun_debug.h"
+#include "useful-functions.hh"
 #include "<mtt_model_name>_def.h"
 #include "<mtt_model_name>_sympar.h"
 
 static double *mttu;		/* pointer to inputs */
 static double *mttpar;		/* pointer to parameters */