sci2c arduino updated

12 files changed, 2152 insertions, 0 deletions

diff --git a/2.3-1/src/c/signalProcessing/levin/Makefile.am b/2.3-1/src/c/signalProcessing/levin/Makefile.am
new file mode 100644
index 00000000..3e6de02f
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/Makefile.am
@@ -0,0 +1,76 @@
+##
+##  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+##  Copyright (C) 2008 - INRIA - Arnaud TORSET
+##
+##  This file must be used under the terms of the CeCILL.
+##  This source file is licensed as described in the file COPYING, which
+##  you should have received as part of this distribution.  The terms
+##  are also available at
+##  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+##
+##
+
+
+
+
+libLevin_la_CFLAGS =	-I $(top_builddir)/src/c/type \
+			-I $(top_builddir)/src/c/matrixOperations/includes \
+			-I $(top_builddir)/src/c/operations/includes \
+			-I $(top_builddir)/src/c/auxiliaryFunctions/includes \
+			-I $(top_builddir)/src/c/elementaryFunctions/includes \
+			-I $(top_builddir)/src/c/signalProcessing/includes \
+			-I $(top_builddir)/src/c/signalProcessing/levin
+
+
+instdir = $(top_builddir)/lib
+
+
+pkglib_LTLIBRARIES = libLevin.la
+
+HEAD = ../includes/levin.h
+
+
+libLevin_la_SOURCES = 	$(HEAD) \
+					levinUtils.c \
+					slevina.c \
+					dlevina.c
+
+
+###############
+#### Check ####
+###############
+check_PROGRAMS = 	testDoubleLevin 	testFloatLevin
+
+
+check_LDADD =		$(top_builddir)/src/c/type/libDoubleComplex.la \
+			$(top_builddir)/src/c/type/libFloatComplex.la \
+			$(top_builddir)/src/fortran/blas/libsciblas.la \
+			$(top_builddir)/src/fortran/lapack/libscilapack.la \
+			$(top_builddir)/src/c/matrixOperations/inversion/libMatrixInversion.la \
+			$(top_builddir)/src/c/matrixOperations/multiplication/libMatrixMultiplication.la \
+			$(top_builddir)/src/c/matrixOperations/zeros/libMatrixZeros.la \
+			$(top_builddir)/src/c/signalProcessing/levin/libLevin.la \
+			$(top_builddir)/src/c/operations/addition/libAddition.la \
+			$(top_builddir)/src/c/operations/multiplication/libMultiplication.la \
+			$(top_builddir)/src/c/operations/subtraction/libSubtraction.la \
+			@LIBMATH@
+
+
+check_INCLUDES =	-I $(top_builddir)/src/c/type \
+			-I $(top_builddir)/src/c/matrixOperations/includes \
+			-I $(top_builddir)/src/c/operations/includes \
+			-I $(top_builddir)/src/c/auxiliaryFunctions/includes \
+			-I $(top_builddir)/src/c/signalProcessing/includes \
+			-I $(top_builddir)/src/c/signalProcessing/levin
+
+
+testDoubleLevin_SOURCES = testDoubleLevin.c
+testDoubleLevin_LDADD = $(check_LDADD)
+testDoubleLevin_CFLAGS = $(check_INCLUDES)
+
+testFloatLevin_SOURCES = testFloatLevin.c
+testFloatLevin_LDADD = $(check_LDADD)
+testFloatLevin_CFLAGS = $(check_INCLUDES)
+
+
+TESTS =		testDoubleLevin 	testFloatLevin
diff --git a/2.3-1/src/c/signalProcessing/levin/Makefile.in b/2.3-1/src/c/signalProcessing/levin/Makefile.in
new file mode 100644
index 00000000..ebe824e0
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/Makefile.in
@@ -0,0 +1,759 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+TESTS = testDoubleLevin$(EXEEXT) testFloatLevin$(EXEEXT)
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+	$(top_builddir)/src/fortran/lapack/libscilapack.la \
+	$(top_builddir)/src/c/matrixOperations/inversion/libMatrixInversion.la \
+	$(top_builddir)/src/c/matrixOperations/multiplication/libMatrixMultiplication.la \
+	$(top_builddir)/src/c/matrixOperations/zeros/libMatrixZeros.la \
+	$(top_builddir)/src/c/signalProcessing/levin/libLevin.la \
+	$(top_builddir)/src/c/operations/addition/libAddition.la \
+	$(top_builddir)/src/c/operations/multiplication/libMultiplication.la \
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+			-I $(top_builddir)/src/c/matrixOperations/includes \
+			-I $(top_builddir)/src/c/operations/includes \
+			-I $(top_builddir)/src/c/auxiliaryFunctions/includes \
+			-I $(top_builddir)/src/c/elementaryFunctions/includes \
+			-I $(top_builddir)/src/c/signalProcessing/includes \
+			-I $(top_builddir)/src/c/signalProcessing/levin
+
+instdir = $(top_builddir)/lib
+pkglib_LTLIBRARIES = libLevin.la
+HEAD = ../includes/levin.h
+libLevin_la_SOURCES = $(HEAD) \
+					levinUtils.c \
+					slevina.c \
+					dlevina.c
+
+check_LDADD = $(top_builddir)/src/c/type/libDoubleComplex.la \
+			$(top_builddir)/src/c/type/libFloatComplex.la \
+			$(top_builddir)/src/fortran/blas/libsciblas.la \
+			$(top_builddir)/src/fortran/lapack/libscilapack.la \
+			$(top_builddir)/src/c/matrixOperations/inversion/libMatrixInversion.la \
+			$(top_builddir)/src/c/matrixOperations/multiplication/libMatrixMultiplication.la \
+			$(top_builddir)/src/c/matrixOperations/zeros/libMatrixZeros.la \
+			$(top_builddir)/src/c/signalProcessing/levin/libLevin.la \
+			$(top_builddir)/src/c/operations/addition/libAddition.la \
+			$(top_builddir)/src/c/operations/multiplication/libMultiplication.la \
+			$(top_builddir)/src/c/operations/subtraction/libSubtraction.la \
+			@LIBMATH@
+
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+			-I $(top_builddir)/src/c/matrixOperations/includes \
+			-I $(top_builddir)/src/c/operations/includes \
+			-I $(top_builddir)/src/c/auxiliaryFunctions/includes \
+			-I $(top_builddir)/src/c/signalProcessing/includes \
+			-I $(top_builddir)/src/c/signalProcessing/levin
+
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+	@rm -f testFloatLevin$(EXEEXT)
+	$(testFloatLevin_LINK) $(testFloatLevin_OBJECTS) $(testFloatLevin_LDADD) $(LIBS)
+
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diff --git a/2.3-1/src/c/signalProcessing/levin/dlevina.c b/2.3-1/src/c/signalProcessing/levin/dlevina.c
new file mode 100644
index 00000000..29ee6223
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/dlevina.c
@@ -0,0 +1,185 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+#include <stdlib.h>
+#include "levin.h"
+#include "levinUtils.h"
+#include "matrixInversion.h"
+#include "matrixMultiplication.h"
+#include "zeros.h"
+
+void dlevina (int n, double* cov, int lCov, int cCov, double* la, double* sig, double* lb){
+/*
+	[la and lb]
+	In Scilab, the return value la is a list of n elements. Each element is a matrix cCov*cCov,
+	and each element of the matrix is a polynome whose degree is n, so the polynome got n+1 elements.
+	The greatest size of a element of the list is : (n+1)*cCov*cCov.
+
+	Here, la is a matrix which contain all elements of the list, its size is n*(n+1)*cCov*cCov. We take the
+	maximum size for all elements.
+	The first element of the list is the first (n+1)*cCov*cCov elements of la, namely la[0] to la[(n+1)*cCov*cCov-1].
+	The second element of the list is the elements of la between (n+1)*cCov*cCov and 2*(n+1)*cCov*cCov,namely la[(n+1)*cCov*cCov] 
+	to la[2*(n+1)*cCov*cCov-1],...
+
+	Enter now in a element of the list. Take the first for example.
+	This is, like said before, a cCov*cCov matrix. In la, it contains (n+1)*cCov*cCov. Each element of the matrix contains (n+1)
+	elements. As it's stocked by columns, if we represent a matrix like [a   c], for example, the elements 0 to n of la represent 
+							     					  [b   d]
+	a, the elements (n+1) to 2(n+1)-1 represent b,...
+	
+	To finish, look at the elements of the matrix, the polynomes. The coefficients of the polynomes are stocked in increasing order.
+
+	For example, if la in Scilab is  : list( [3+2x  5-2x ]) 
+					     		   ( [-5+x  -2+4x])
+					     		   ([3+x-x^2    -1+2x    ])
+					     		   ([1+6x+3x^2  -2x-x^2  ])
+		the result in dlevin will be : 
+		-la is a table of 2*3*2*2 elements(n=2,cCov=2);
+		-la[]={3,2,0,  -5,1,0,   5,-2,0,   -2,4,0,   3,1,-1,   1,6,3   -1,2,0,   0,-2,-1}.
+
+	It's the same for lb.
+
+	[sig]
+	In Scilab, the return value sig is a list of n elements. Each element is a matrix cCov*cCov,
+	and each element of the matrix is a scalar, so 1 element.
+	The greatest size of a element of the list is : cCov*cCov.
+
+	Let see an example so know how it's stocked.
+	In Scilab, if sig is : list( [1  3]) 
+				   	   ( [2  4])
+				   	   ( [5  7])
+				   	   ( [6  8])
+	the result in dlevin will be :
+		-sig={1,2,  5,6,  3,4,  7,8}.
+	It's as if we put the matrix the ones under the others and we take the first column, the second,...
+
+	>>>CAREFUL<<<
+	la/lb and sig are stored differently 
+
+
+*/
+
+
+	int i=0;
+	
+	
+/*version ISO C99	
+	double tmp1[n*cCov*cCov], tmp2[n*cCov*cCov];
+	double sig1[cCov], gam[cCov];
+	double R1[n*cCov],R2[n*cCov],R3[n*cCov],R4[n*cCov];
+*/	
+/*version pas ISO C99	*/	
+	double *tmp1, *tmp2;
+	double *sig1, *gam;
+	double *R1,*R2,*R3,*R4;
+
+	/* FIXME : malloc here */
+
+	tmp1=(double *)malloc((unsigned int)((n+1)*cCov*cCov)*sizeof(double));
+	tmp2=(double *)malloc((unsigned int)((n+1)*cCov*cCov)*sizeof(double));
+	sig1=(double *)malloc((unsigned int)(cCov*cCov)*sizeof(double));
+	gam=(double *)malloc((unsigned int)(cCov*cCov)*sizeof(double));
+	R1=(double *)malloc((unsigned int)(n*cCov*cCov)*sizeof(double));
+	R2=(double *)malloc((unsigned int)(n*cCov*cCov)*sizeof(double));
+	R3=(double *)malloc((unsigned int)(n*cCov*cCov)*sizeof(double));
+	R4=(double *)malloc((unsigned int)(n*cCov*cCov)*sizeof(double));
+	
+
+
+	/* 
+	 * Initializations
+	 * */
+	dzerosa(sig,n*cCov*cCov,1);
+	dzerosa(la,n*(n+1)*cCov*cCov,1);
+	dzerosa(lb,n*(n+1)*cCov*cCov,1);
+
+	/*equal to eye(la) and eye(lb)
+	  but we can't use eye cause to the indexation*/
+	for (i=0;i<cCov;i++){
+		la[i*((n+1)*(cCov+1))]=1;
+		lb[i*((n+1)*(cCov+1))]=1;
+	}
+		
+	dr1(cov,lCov,cCov,n,R1);
+	dr2(cov,lCov,cCov,n,R2);
+	dr3(cov,lCov,cCov,n,R3);
+	dr4(cov,lCov,cCov,n,R4);
+
+/* case i=0 */
+
+
+	/*computation of sig */
+	dlevinmul(la,R4,n,cCov,0,sig,n*cCov,0,'d');
+	/*computation of gam1 */
+	dlevinmul(lb,R2,n,cCov,0,gam,cCov,0,'u');	
+	/*computation of c1*r1 */
+	dlevinmul(la,R1,n,cCov,0,tmp1,cCov,0,'u');
+	/*computation of inv(gam1) */
+	dinverma(gam,sig1,cCov);
+	/*computation of k1 = c1*r1*inv(gam1) */
+	dmulma(tmp1,cCov,cCov,sig1,cCov,cCov,tmp2);
+	/*computation of k1*lb */
+	dlevinmul2(tmp2,lb,0,n,cCov,tmp1);
+	/*computation of k1*lb*z */
+	ddecalage(tmp1,0,n,cCov,tmp1);
+	/*computation of la */
+	dlevinsub(la,tmp1,n,cCov,0,0,la);
+
+	/*computation of sig1 (we extract the value if sig at time 0)*/
+	dlevinsig(sig,0,cCov,n*cCov,sig1);
+	/*computation of c2*r3 */
+	dlevinmul(lb,R3,n,cCov,0,tmp1,cCov,0,'d');
+	/*computation of inv(sig1)*/
+	dinverma(sig1,gam,cCov);
+	/*computation of k2 = c2*r3*inv(sig1) */
+	dmulma(tmp1,cCov,cCov,gam,cCov,cCov,tmp2);
+	/*computation of k2*la (here it's lb cause la have been modified
+	  and the precedent values hadn't been saved)*/
+	dlevinmul2(tmp2,lb,0,n,cCov,tmp1);
+	/*computation of lb*z */
+	ddecalage(lb,0,n,cCov,lb);
+	/*computation of lb */
+	dlevinsub(lb,tmp1,n,cCov,0,0,lb);
+
+
+	for (i=1;i<n;i++){
+		dlevinmul(la,R4,n,cCov,i,sig,n*cCov,1,'d');
+		dlevinmul(lb,R2,n,cCov,i,gam,cCov,0,'u');
+		dlevinmul(la,R1,n,cCov,i,tmp1,cCov,0,'u');
+		dinverma(gam,sig1,cCov);
+		dmulma(tmp1,cCov,cCov,sig1,cCov,cCov,tmp2);
+		
+		dlevinmul2(tmp2,lb,i-1,n,cCov,tmp1);
+		ddecalage(tmp1,0,n,cCov,tmp1);
+		dlevinsub(la,tmp1,n,cCov,i,i,la);/*a*/
+
+		/*computation of sig1 (we extract the value if sig at time i)*/
+		dlevinsig(sig,i,cCov,n*cCov,sig1);		
+		dlevinmul(lb,R3,n,cCov,i,tmp1,cCov,0,'d');
+		dinverma(sig1,gam,cCov);
+		dmulma(tmp1,cCov,cCov,gam,cCov,cCov,tmp2);
+		/*computation of k2*la (now it's la at time (i-1))*/
+		dlevinmul2(tmp2,la,i-1,n,cCov,tmp1);
+		ddecalage(lb,(i-1)*(n+1)*cCov*cCov,n,cCov,tmp2);
+		dlevinsub(tmp2,tmp1,n,cCov,0,i,lb);
+	}
+
+
+	free(R4);
+	free(R3);
+	free(R2);
+	free(R1);
+	free(gam);
+	free(sig1);
+	free(tmp2);
+	free(tmp1);
+}
diff --git a/2.3-1/src/c/signalProcessing/levin/levinUtils.c b/2.3-1/src/c/signalProcessing/levin/levinUtils.c
new file mode 100644
index 00000000..0048c860
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/levinUtils.c
@@ -0,0 +1,270 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+
+
+
+
+#include "levinUtils.h"
+#include "stdio.h"
+/* Double Functions */
+void dr1(double *in,int lines, int columns, int n, double * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(n-i/columns)*columns + i%columns + j*lines];
+		}
+	}
+}
+
+void dr2(double *in,int lines, int columns, int n, double * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(n-1-i/columns)*columns + i%columns + j*lines];
+		}
+	}
+}
+
+
+void dr3(double *in,int lines, int columns, int n, double * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(i/columns+1)*columns + j%columns + (i%columns)*lines];
+		}
+	}
+}
+
+
+void dr4(double *in,int lines, int columns, int n, double * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			if ( (j*n*columns-1<i+j*n*columns) && (i+j*n*columns<j*n*columns+columns) ) 
+				out[i+j*n*columns]=in[i+j*lines];
+			else  out[i+j*n*columns]=in[i + j%columns + (i%columns)*(lines-1)];
+		}
+	}
+}
+
+
+
+void dlevinmul(double* in1, double* in2, int n, int columns, int ind_boucle, double* out, int lines, int deb_out,char choix){
+	int i=0, j=0, debut=0,start_out=0;
+	double accu;	
+	
+	if (ind_boucle==0) 	debut=0;
+	else	debut = (ind_boucle-1)*(n+1)*columns*columns;
+
+	start_out = deb_out*ind_boucle*columns;
+
+	switch(choix){
+		case 'u' : 
+			for (i=0;i<columns*columns;i++){
+				accu=0;
+				for(j=0;j<ind_boucle*columns+columns;j++){
+					accu += in1[debut+i%columns*(n+1) + (columns*(n+1))*(j%columns)+j/columns] * in2[n*columns-((ind_boucle+1)*columns)+j+(i/columns)*n*columns];
+				}
+				out[start_out+i%columns+(i/columns)*lines] = accu;
+			}
+			break;
+		case 'd' : 
+			for (i=0;i<columns*columns;i++){
+				accu=0;
+				for(j=0;j<ind_boucle*columns+columns;j++){	
+					accu+=in1[debut+i%columns*(n+1) + (columns*(n+1))*(j%columns)+j/columns]*in2[j+(i/columns)*n*columns];	
+				}
+				out[start_out+i%columns+(i/columns)*lines] = accu;
+			}
+			break;
+		default : break;
+	}
+}
+
+
+
+void dlevinsig(double *sig,int n, int columns, int lines, double *sig1){
+	int i=0;
+	for (i=0;i<columns*columns;i++){
+		sig1[i]=sig[n*columns + i%columns +(i/columns)*lines];
+	}
+}
+
+
+void dlevinmul2(double* in1, double *in2,int ind_boucle,int n,int columns,double* out){
+	int i=0,j=0, debut;
+	double accu;
+	debut = ind_boucle*(n+1)*columns*columns;
+	for(i=0;i<(n+1)*columns*columns;i++){
+		accu=0;
+		for (j=0;j<columns;j++){
+			accu += in1[(i/(n+1))%columns+j*columns]*in2[debut+i%(n+1)+(i/((n+1)*columns))*(n+1)*columns+j*(n+1)];
+		}
+		out[i]=accu;
+	}
+}
+
+
+void dlevinsub(double* in1, double* in2, int n, int columns, int deb_in, int ind_boucle, double* out){
+	int i=0;
+	int deb_out= ind_boucle*(n+1)*columns*columns;
+	int deb_in1;
+	
+	if (deb_in==0) deb_in1=0;
+	else deb_in1=(deb_in-1)*(n+1)*columns*columns;
+
+	for (i=0;i<(n+1)*columns*columns;i++){
+		out[deb_out + i] = in1[deb_in1+i]-in2[i];
+	}
+}
+
+
+
+void ddecalage(double* in, int deb_in,int n,int columns,double *out){
+	int i=0,j=0;
+
+	for (i=0;i<columns*columns;i++){
+			for(j=n;j>0;j--) {out[i*(n+1)+j]=in[i*(n+1)+deb_in+j-1];}
+			out[i*(n+1)]=0;
+		}
+
+}
+
+
+
+
+
+/* Float Functions */
+
+void sr1(float *in,int lines, int columns, int n, float * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(n-i/columns)*columns + i%columns + j*lines];
+		}
+	}
+}
+
+void sr2(float *in,int lines, int columns, int n, float * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(n-1-i/columns)*columns + i%columns + j*lines];
+		}
+	}
+}
+
+
+void sr3(float *in,int lines, int columns, int n, float * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			out[i+j*n*columns]=in[(i/columns+1)*columns + j%columns + (i%columns)*lines];
+		}
+	}
+}
+
+
+void sr4(float *in,int lines, int columns, int n, float * out){
+	int i,j;
+	for (i=0;i<n*columns;i++) {
+		for (j=0;j<columns;j++){
+			if ( (j*n*columns-1<i+j*n*columns) && (i+j*n*columns<j*n*columns+columns) ) 
+				out[i+j*n*columns]=in[i+j*lines];
+			else  out[i+j*n*columns]=in[i + j%columns + (i%columns)*(lines-1)];
+		}
+	}
+}
+
+
+
+void slevinmul(float* in1, float* in2, int n, int columns, int ind_boucle, float* out, int lines, int deb_out,char choix){
+	int i=0, j=0, debut=0,start_out=0;
+	float accu;	
+	
+	if (ind_boucle==0) 	debut=0;
+	else	debut = (ind_boucle-1)*(n+1)*columns*columns;
+
+	start_out = deb_out*ind_boucle*columns;
+
+	switch(choix){
+		case 'u' : 
+			for (i=0;i<columns*columns;i++){
+				accu=0;
+				for(j=0;j<ind_boucle*columns+columns;j++){
+					accu += in1[debut+i%columns*(n+1) + (columns*(n+1))*(j%columns)+j/columns] * in2[n*columns-((ind_boucle+1)*columns)+j+(i/columns)*n*columns];
+				}
+				out[start_out+i%columns+(i/columns)*lines] = accu;
+			}
+			break;
+		case 'd' : 
+			for (i=0;i<columns*columns;i++){
+				accu=0;
+				for(j=0;j<ind_boucle*columns+columns;j++){	
+					accu+=in1[debut+i%columns*(n+1) + (columns*(n+1))*(j%columns)+j/columns]*in2[j+(i/columns)*n*columns];	
+				}
+				out[start_out+i%columns+(i/columns)*lines] = accu;
+			}
+			break;
+		default : break;
+	}
+}
+
+
+
+void slevinsig(float *sig,int n, int columns, int lines, float *sig1){
+	int i=0;
+	for (i=0;i<columns*columns;i++){
+		sig1[i]=sig[n*columns + i%columns +(i/columns)*lines];
+	}
+}
+
+
+void slevinmul2(float* in1, float *in2,int ind_boucle,int n,int columns,float* out){
+	int i=0,j=0, debut;
+	float accu;
+	debut = ind_boucle*(n+1)*columns*columns;
+	for(i=0;i<(n+1)*columns*columns;i++){
+		accu=0;
+		for (j=0;j<columns;j++){
+			accu += in1[(i/(n+1))%columns+j*columns]*in2[debut+i%(n+1)+(i/((n+1)*columns))*(n+1)*columns+j*(n+1)];
+		}
+		out[i]=accu;
+	}
+}
+
+
+void slevinsub(float* in1, float* in2, int n, int columns, int deb_in, int ind_boucle, float* out){
+	int i=0;
+	int deb_out= ind_boucle*(n+1)*columns*columns;
+	int deb_in1;
+	
+	if (deb_in==0) deb_in1=0;
+	else deb_in1=(deb_in-1)*(n+1)*columns*columns;
+
+	for (i=0;i<(n+1)*columns*columns;i++){
+		out[deb_out + i] = in1[deb_in1+i]-in2[i];
+	}
+}
+
+
+void sdecalage(float* in, int deb_in,int n,int columns,float *out){
+	int i=0,j=0;
+
+	for (i=0;i<columns*columns;i++){
+			for(j=n;j>0;j--) {out[i*(n+1)+j]=in[i*(n+1)+deb_in+j-1];}
+			out[i*(n+1)]=0;
+		}
+
+}
+
diff --git a/2.3-1/src/c/signalProcessing/levin/levinUtils.h b/2.3-1/src/c/signalProcessing/levin/levinUtils.h
new file mode 100644
index 00000000..62df88f2
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/levinUtils.h
@@ -0,0 +1,71 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+
+
+
+
+/* creation of arrays used in levin */
+
+void dr1(double *in,int lines,int columns, int n, double * out);
+void dr2(double *in,int lines,int columns, int n, double * out);
+void dr3(double *in,int lines,int columns, int n, double * out);
+void dr4(double *in,int lines,int columns, int n, double * out);
+void sr1(float *in,int lines,int columns, int n, float * out);
+void sr2(float *in,int lines,int columns, int n, float * out);
+void sr3(float *in,int lines,int columns, int n, float * out);
+void sr4(float *in,int lines,int columns, int n, float * out);
+
+
+
+/*multiplications used in levin program, differents from the classic multiplication*/
+/*
+	in1,in2 : matrices to multiply
+	n : 
+	columns : number of columns of in2
+	ind_boucle : indice of the loop
+	out : result matrix
+	lines : number of lines of the result
+	deb_out : 0 if the result start to the indice 0, 1 otherwise
+	choix : 'u' or 'd', depends of in2. We take either the k first elements of in2 ('u') or the k last ('d'), 
+		k is a nomber which depends of the indice of loop, the columns ... 
+	*/
+void dlevinmul(double* in1, double* in2, int n, int columns, int ind_boucle, double* out, int lines, int deb_out,char choix);
+void dlevinmul2(double* in1, double *in2,int ind_boucle,int n,int columns,double* out);
+void slevinmul(float* in1, float* in2, int n, int columns, int ind_boucle, float* out, int lines, int deb_out,char choix);
+void slevinmul2(float* in1, float *in2,int ind_boucle,int n,int columns,float* out);
+
+
+/*take the values of sig wanted*/
+void dlevinsig(double *sig,int n, int columns, int lines, double *sig1);
+void slevinsig(float *sig,int n, int columns, int lines, float *sig1);
+
+/*a subtraction used in levin program, is different from the classic subtraction cause of the indices*/
+/*
+	in1,in2 : matrices to subtract
+	n : 
+	columns : number of columns of in2
+	deb_in : place of the first element of in1
+	ind_boucle : indice of the loop
+	out : result matrix
+	*/
+void dlevinsub(double* in1, double* in2, int n, int columns, int deb_in, int ind_boucle, double* out);
+void slevinsub(float* in1, float* in2, int n, int columns, int deb_in, int ind_boucle, float* out);
+
+
+/*used for the multiplication by z which is equal to step forward*/
+void ddecalage(double* in, int deb_in,int n,int columns,double * out);
+void sdecalage(float* in, int deb_in,int n,int columns,float * out);
+
+
+
+
diff --git a/2.3-1/src/c/signalProcessing/levin/slevina.c b/2.3-1/src/c/signalProcessing/levin/slevina.c
new file mode 100644
index 00000000..e0e30a84
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/slevina.c
@@ -0,0 +1,185 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+#include <stdlib.h>
+#include "levin.h"
+#include "levinUtils.h"
+#include "matrixInversion.h"
+#include "matrixMultiplication.h"
+#include "zeros.h"
+
+void slevina (int n, float* cov, int lCov, int cCov, float* la, float* sig, float* lb){
+/*
+	[la and lb]
+	In Scilab, the return value la is a list of n elements. Each element is a matrix cCov*cCov,
+	and each element of the matrix is a polynome whose degree is n, so the polynome got n+1 elements.
+	The greatest size of a element of the list is : (n+1)*cCov*cCov.
+
+	Here, la is a matrix which contain all elements of the list, its size is n*(n+1)*cCov*cCov. We take the
+	maximum size for all elements.
+	The first element of the list is the first (n+1)*cCov*cCov elements of la, namely la[0] to la[(n+1)*cCov*cCov-1].
+	The second element of the list is the elements of la between (n+1)*cCov*cCov and 2*(n+1)*cCov*cCov,namely la[(n+1)*cCov*cCov] 
+	to la[2*(n+1)*cCov*cCov-1],...
+
+	Enter now in a element of the list. Take the first for example.
+	This is, like said before, a cCov*cCov matrix. In la, it contains (n+1)*cCov*cCov. Each element of the matrix contains (n+1)
+	elements. As it's stocked by columns, if we represent a matrix like [a   c], for example, the elements 0 to n of la represent 
+							     					  [b   d]
+	a, the elements (n+1) to 2(n+1)-1 represent b,...
+	
+	To finish, look at the elements of the matrix, the polynomes. The coefficients of the polynomes are stocked in increasing order.
+
+	For example, if la in Scilab is  : list( [3+2x  5-2x ]) 
+					     		   ( [-5+x  -2+4x])
+					     		   ([3+x-x^2    -1+2x    ])
+					     		   ([1+6x+3x^2  -2x-x^2  ])
+		the result in dlevin will be : 
+		-la is a table of 2*3*2*2 elements(n=2,cCov=2);
+		-la[]={3,2,0,  -5,1,0,   5,-2,0,   -2,4,0,   3,1,-1,   1,6,3   -1,2,0,   0,-2,-1}.
+
+	It's the same for lb.
+
+	[sig]
+	In Scilab, the return value sig is a list of n elements. Each element is a matrix cCov*cCov,
+	and each element of the matrix is a scalar, so 1 element.
+	The greatest size of a element of the list is : cCov*cCov.
+
+	Let see an example so know how it's stocked.
+	In Scilab, if sig is : list( [1  3]) 
+				   	   ( [2  4])
+				   	   ( [5  7])
+				   	   ( [6  8])
+	the result in dlevin will be :
+		-sig={1,2,  5,6,  3,4,  7,8}.
+	It's as if we put the matrix the ones under the others and we take the first column, the second,...
+
+
+	>>>CAREFUL<<<
+	la/lb and sig are stored differently 
+
+*/
+
+
+	int i=0;
+	
+	
+/*version ISO C99	
+	double tmp1[n*cCov*cCov], tmp2[n*cCov*cCov];
+	double sig1[cCov], gam[cCov];
+	double R1[n*cCov],R2[n*cCov],R3[n*cCov],R4[n*cCov];
+*/	
+/*version pas ISO C99	*/	
+	float *tmp1, *tmp2;
+	float *sig1, *gam;
+	float *R1,*R2,*R3,*R4;
+
+	/* FIXME : malloc here */
+
+	tmp1=(float*)malloc((unsigned int)((n+1)*cCov*cCov)*sizeof(float));
+	tmp2=(float*)malloc((unsigned int)((n+1)*cCov*cCov)*sizeof(float));
+	sig1=(float*)malloc((unsigned int)(cCov*cCov)*sizeof(float));
+	gam=(float*)malloc((unsigned int)(cCov*cCov)*sizeof(float));
+	R1=(float*)malloc((unsigned int)(n*cCov*cCov)*sizeof(float));
+	R2=(float*)malloc((unsigned int)(n*cCov*cCov)*sizeof(float));
+	R3=(float*)malloc((unsigned int)(n*cCov*cCov)*sizeof(float));
+	R4=(float*)malloc((unsigned int)(n*cCov*cCov)*sizeof(float));
+	
+
+
+	/* 
+	 * Initializations
+	 * */
+	szerosa(sig,n*cCov*cCov,1);
+	szerosa(la,n*(n+1)*cCov*cCov,1);
+	szerosa(lb,n*(n+1)*cCov*cCov,1);
+
+	/*equal to eye(la) and eye(lb)
+	  but we can't use eye cause to the indexation*/
+	for (i=0;i<cCov;i++){
+		la[i*((n+1)*(cCov+1))]=1;
+		lb[i*((n+1)*(cCov+1))]=1;
+	}
+		
+	sr1(cov,lCov,cCov,n,R1);
+	sr2(cov,lCov,cCov,n,R2);
+	sr3(cov,lCov,cCov,n,R3);
+	sr4(cov,lCov,cCov,n,R4);
+
+/* case i=0 */
+
+
+	/*computation of sig */
+	slevinmul(la,R4,n,cCov,0,sig,n*cCov,0,'d');
+	/*computation of gam1 */
+	slevinmul(lb,R2,n,cCov,0,gam,cCov,0,'u');	
+	/*computation of c1*r1 */
+	slevinmul(la,R1,n,cCov,0,tmp1,cCov,0,'u');
+	/*computation of inv(gam1) */
+	sinverma(gam,sig1,cCov);
+	/*computation of k1 = c1*r1*inv(gam1) */
+	smulma(tmp1,cCov,cCov,sig1,cCov,cCov,tmp2);
+	/*computation of k1*lb */
+	slevinmul2(tmp2,lb,0,n,cCov,tmp1);
+	/*computation of k1*lb*z */
+	sdecalage(tmp1,0,n,cCov,tmp1);
+	/*computation of la */
+	slevinsub(la,tmp1,n,cCov,0,0,la);
+
+	/*computation of sig1 (we extract the value if sig at time 0)*/
+	slevinsig(sig,0,cCov,n*cCov,sig1);
+	/*computation of c2*r3 */
+	slevinmul(lb,R3,n,cCov,0,tmp1,cCov,0,'d');
+	/*computation of inv(sig1)*/
+	sinverma(sig1,gam,cCov);
+	/*computation of k2 = c2*r3*inv(sig1) */
+	smulma(tmp1,cCov,cCov,gam,cCov,cCov,tmp2);
+	/*computation of k2*la (here it's lb cause la have been modified
+	  and the precedent values hadn't been saved)*/
+	slevinmul2(tmp2,lb,0,n,cCov,tmp1);
+	/*computation of lb*z */
+	sdecalage(lb,0,n,cCov,lb);
+	/*computation of lb */
+	slevinsub(lb,tmp1,n,cCov,0,0,lb);
+
+
+	for (i=1;i<n;i++){
+		slevinmul(la,R4,n,cCov,i,sig,n*cCov,1,'d');
+		slevinmul(lb,R2,n,cCov,i,gam,cCov,0,'u');
+		slevinmul(la,R1,n,cCov,i,tmp1,cCov,0,'u');
+		sinverma(gam,sig1,cCov);
+		smulma(tmp1,cCov,cCov,sig1,cCov,cCov,tmp2);
+
+		slevinmul2(tmp2,lb,i-1,n,cCov,tmp1);
+		sdecalage(tmp1,0,n,cCov,tmp1);
+		slevinsub(la,tmp1,n,cCov,i,i,la);/*a*/
+
+		/*computation of sig1 (we extract the value if sig at time i)*/
+		slevinsig(sig,i,cCov,n*cCov,sig1);		
+		slevinmul(lb,R3,n,cCov,i,tmp1,cCov,0,'d');
+		sinverma(sig1,gam,cCov);
+		smulma(tmp1,cCov,cCov,gam,cCov,cCov,tmp2);
+		/*computation of k2*la (now it's la at time (i-1))*/
+		slevinmul2(tmp2,la,i-1,n,cCov,tmp1);
+		sdecalage(lb,(i-1)*(n+1)*cCov*cCov,n,cCov,tmp2);
+		slevinsub(tmp2,tmp1,n,cCov,0,i,lb);
+	}
+
+
+	free(R4);
+	free(R3);
+	free(R2);
+	free(R1);
+	free(gam);
+	free(sig1);
+	free(tmp2);
+	free(tmp1);
+}
diff --git a/2.3-1/src/c/signalProcessing/levin/testDoubleLevin.c b/2.3-1/src/c/signalProcessing/levin/testDoubleLevin.c
new file mode 100644
index 00000000..5cbd66c1
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/testDoubleLevin.c
@@ -0,0 +1,103 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+#include <math.h>
+#include <stdio.h>
+#include <assert.h>
+#include "levin.h"
+
+
+
+static void dlevinaTest(void) {
+
+	int i=0;
+  
+	double in[20]={0.9932627780362963676453,0.8074779896996915340424,0.8554796632379293441773,
+	0.5031460602767765522003,0.0963323051109910011292,0.7058098311536014080048,0.8630577065050601959229,
+	0.0076185003854334354401,0.8048951094970107078552,0.5963762304745614528656,0.1176836211234331130981,
+	0.8010095250792801380158,0.5132340090349316596985,0.2010910022072494029999,0.7860820889472961425781,
+	0.7865035482682287693024,0.6951530007645487785339,0.4248132123611867427826,0.3446625452488660812378,
+	0.6497785751707851886749};
+	
+	double result_la[48]={1,-0.3865652298877474413175,0,0,
+	0,- 0.3434956227371184778185,0,0,
+	0,- 0.5839401384584462784133,0,0,
+	1, - 0.2005808775714553182645,0,0,
+	1, - 0.9800896173744618744550, 1.690821697485581420750,0,
+	0,- 0.0829753946826485844213, 0.1706850739778944525682,0,
+	0,- 1.5024216979529190219012, - 0.2246231721723708774086,0,
+	1, - 0.1137930279260921523354, - 0.9252347371003220022345,0,
+	1, 0.9890664402902992202726, 0.5787159455904740124055,1.2930051366411721147642,
+	0,- 0.8505434486601569643582,0.6053315910573954239382, - 0.5028225952598519565839,
+	0,2.1236994816779066752588, - 2.0487578989503822946006, - 3.9701563399198689374714,
+	1, - 1.4716550983021570164766, - 0.2144135496153387610008, 1.4891952441184541644503};
+	
+	double result_sig[12]={0.9932627780362963676453, 0.8074779896996915340424,0.3628661470549920387008,0.4106795421050958294629,
+	- 0.6299693698364057237171,- 0.0327761932052800242232,0.1176836211234331130981,0.8010095250792801380158,
+	- 0.1942402590062223821654, 0.5878460460823274891240,	0.3391635613203383137204,0.1291488276492920306282};
+	
+	double result_lb[48]={- 0.3981923483861428136876,1,0,0,
+	- 0.3550295998674473652024,0,0,0,
+	- 0.5696378489005990974903,0,0,0,
+	- 0.1988863157065166586968,1,0,0,
+	1.62419596196504145702, - 0.9819754657045941526050,1,0,
+	0.0329804805798983302623, - 0.0396945499933941681192,0,0,
+	- 0.1283118770193089619447, - 1.492334154918740996010,0,0,
+	- 0.9551334433810730883963, - 0.0265634378315470209841,1,0,
+	1.1913835764722526810999,0.0301096362936850159286, 1.909619275538441574014,1,
+	0.4767865147665533709365 ,- 0.2016469880890300325760,0.2878592385656049135179,0,
+	5.1391578635011887499218, - 2.5030727471739586675881, - 6.5148738878935787965929,0,
+	- 2.8040366068494293472213 ,- 1.3523880325486907771904, 2.4607313355305917568217,1};
+ 
+	double la[48],lb[48],sig[12];
+
+	dlevina(3,in,10,2,la,sig,lb);
+
+	/* FIXME : assert à 10^-13 */
+	/* FIXME : sig est rangé différemment qu'à l'habitude */
+
+	for (i=0;i<48;i++){
+		if (la[i]!=0)
+			assert( (fabs(la[i]-result_la[i]) / fabs(la[i]) ) <3e-15);
+		else 
+			assert( fabs(la[i]-result_la[i]) == 0);
+	}
+	
+	for (i=0;i<12;i++){
+		if (sig[i]!=0)
+			assert( (fabs(sig[i]-result_sig[i]) / fabs(sig[i]) ) <3e-15);
+		else 
+			assert( fabs(sig[i]-result_sig[i]) == 0);
+	}
+	
+	
+	for (i=0;i<48;i++){
+		if (lb[i]!=0)
+			assert( (fabs(lb[i]-result_lb[i]) / fabs(lb[i]) ) <3e-13);
+		else 
+			assert( fabs(lb[i]-result_lb[i]) == 0);
+	}
+	
+}
+
+
+
+static int levinTest(void) {
+  printf("\n>>>> Levin Tests\n");
+  dlevinaTest();
+  return 0;
+}
+
+int main(void) {
+  assert( levinTest()== 0);
+  return 0;
+}
diff --git a/2.3-1/src/c/signalProcessing/levin/testFloatLevin.c b/2.3-1/src/c/signalProcessing/levin/testFloatLevin.c
new file mode 100644
index 00000000..e692f3b7
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/testFloatLevin.c
@@ -0,0 +1,103 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008 - INRIA - Arnaud TORSET
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+#include <math.h>
+#include <stdio.h>
+#include <assert.h>
+#include "levin.h"
+
+
+
+static void dlevinaTest(void) {
+
+	int i=0;
+  
+	float in[20]={0.9932627780362963676453f,0.8074779896996915340424f,0.8554796632379293441773f,
+	0.5031460602767765522003f,0.0963323051109910011292f,0.7058098311536014080048f,0.8630577065050601959229f,
+	0.0076185003854334354401f,0.8048951094970107078552f,0.5963762304745614528656f,0.1176836211234331130981f,
+	0.8010095250792801380158f,0.5132340090349316596985f,0.2010910022072494029999f,0.7860820889472961425781f,
+	0.7865035482682287693024f,0.6951530007645487785339f,0.4248132123611867427826f,0.3446625452488660812378f,
+	0.6497785751707851886749f};
+	
+	float result_la[48]={1.0f,-0.3865652298877474413175f,0.0f,0.0f,
+	0.0f,- 0.3434956227371184778185f,0.0f,0.0f,
+	0.0f,- 0.5839401384584462784133f,0.0f,0.0f,
+	1.0f, - 0.2005808775714553182645f,0.0f,0.0f,
+	1.0f, - 0.9800896173744618744550f, 1.690821697485581420750f,0.0f,
+	0.0f,- 0.0829753946826485844213f, 0.1706850739778944525682f,0.0f,
+	0.0f,- 1.5024216979529190219012f, - 0.2246231721723708774086f,0.0f,
+	1.0f, - 0.1137930279260921523354f, - 0.9252347371003220022345f,0.0f,
+	1.0f, 0.9890664402902992202726f, 0.5787159455904740124055f,1.2930051366411721147642f,
+	0.0f,- 0.8505434486601569643582f,0.6053315910573954239382f, - 0.5028225952598519565839f,
+	0.0f,2.1236994816779066752588f, - 2.0487578989503822946006f, - 3.9701563399198689374714f,
+	1.0f, - 1.4716550983021570164766f, - 0.2144135496153387610008f, 1.4891952441184541644503f};
+	
+	float result_sig[12]={0.9932627780362963676453f, 0.8074779896996915340424f,0.3628661470549920387008f,0.4106795421050958294629f,
+	- 0.6299693698364057237171f,- 0.0327761932052800242232f,0.1176836211234331130981f,0.8010095250792801380158f,
+	- 0.1942402590062223821654f, 0.5878460460823274891240f,	0.3391635613203383137204f,0.1291488276492920306282f};
+	
+	float result_lb[48]={- 0.3981923483861428136876f,1.0f,0.0f,0.0f,
+	- 0.3550295998674473652024f,0.0f,0.0f,0.0f,
+	- 0.5696378489005990974903f,0.0f,0.0f,0.0f,
+	- 0.1988863157065166586968f,1.0f,0.0f,0.0f,
+	1.62419596196504145702f, - 0.9819754657045941526050f,1.0f,0.0f,
+	0.0329804805798983302623f, - 0.0396945499933941681192f,0.0f,0.0f,
+	- 0.1283118770193089619447f, - 1.492334154918740996010f,0.0f,0.0f,
+	- 0.9551334433810730883963f, - 0.0265634378315470209841f,1.0f,0.0f,
+	1.1913835764722526810999f,0.0301096362936850159286f, 1.909619275538441574014f,1.0f,
+	0.4767865147665533709365f ,- 0.2016469880890300325760f,0.2878592385656049135179f,0.0f,
+	5.1391578635011887499218f, - 2.5030727471739586675881f, - 6.5148738878935787965929f,0.0f,
+	- 2.8040366068494293472213f ,- 1.3523880325486907771904f, 2.4607313355305917568217f,1.0f};
+ 
+	float la[48],lb[48],sig[12];
+
+	slevina(3,in,10,2,la,sig,lb);
+
+	/* FIXME : assert à 10^-5 */
+	/* FIXME : sig est rangé différemment qu'à l'habitude */
+
+	for (i=0;i<48;i++){
+		if (la[i]!=0)
+			assert( (fabs(la[i]-result_la[i]) / fabs(la[i]) ) <3e-6);
+		else 
+			assert( fabs(la[i]-result_la[i]) == 0);
+	}
+	
+	for (i=0;i<12;i++){
+		if (sig[i]!=0)
+			assert( (fabs(sig[i]-result_sig[i]) / fabs(sig[i]) ) <3e-6);
+		else 
+			assert( fabs(sig[i]-result_sig[i]) == 0);
+	}
+	
+	
+	for (i=0;i<48;i++){
+		if (lb[i]!=0)
+			assert( (fabs(lb[i]-result_lb[i]) / fabs(lb[i]) ) <3e-5);
+		else 
+			assert( fabs(lb[i]-result_lb[i]) == 0);
+	}
+	
+}
+
+
+
+static int levinTest(void) {
+  printf("\n>>>> Levin Tests\n");
+  dlevinaTest();
+  return 0;
+}
+
+int main(void) {
+  assert( levinTest()== 0);
+  return 0;
+}
diff --git a/2.3-1/src/c/signalProcessing/levin/test_DoubleLevin/testDoubleLevin.vcxproj b/2.3-1/src/c/signalProcessing/levin/test_DoubleLevin/testDoubleLevin.vcxproj
new file mode 100644
index 00000000..4c0136fd
--- /dev/null
+++ b/2.3-1/src/c/signalProcessing/levin/test_DoubleLevin/testDoubleLevin.vcxproj
@@ -0,0 +1,178 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <ItemGroup Label="ProjectConfigurations">

+    <ProjectConfiguration Include="Debug|Win32">

+      <Configuration>Debug</Configuration>

+      <Platform>Win32</Platform>

+    </ProjectConfiguration>

+    <ProjectConfiguration Include="Debug|x64">

+      <Configuration>Debug</Configuration>

+      <Platform>x64</Platform>

+    </ProjectConfiguration>

+    <ProjectConfiguration Include="Release|Win32">

+      <Configuration>Release</Configuration>

+      <Platform>Win32</Platform>

+    </ProjectConfiguration>

+    <ProjectConfiguration Include="Release|x64">

+      <Configuration>Release</Configuration>

+      <Platform>x64</Platform>

+    </ProjectConfiguration>

+  </ItemGroup>

+  <PropertyGroup Label="Globals">

+    <ProjectGuid>{CAA51066-E3AC-4FE7-A330-D946A7AD6026}</ProjectGuid>

+    <RootNamespace>testDoubleLevin</RootNamespace>

+    <Keyword>Win32Proj</Keyword>

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