1 files changed, 53 insertions, 0 deletions
diff --git a/src/c/signalProcessing/conv/cconva.c b/src/c/signalProcessing/conv/cconva.c
new file mode 100644
index 0000000..c523bbe
--- /dev/null
+++ b/src/c/signalProcessing/conv/cconva.c
@@ -0,0 +1,53 @@
+/*
+ *  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 "conv.h"
+#include <stdio.h>
+void cconva(floatComplex *in1, int size1, floatComplex *in2,int size2, floatComplex *out){
+	int m1,i;
+	floatComplex *in1b, *in2b, *result;	
+
+
+	m1=(int)floor( log(size1+size2-1.0) / log(2.0) + 1 );
+	m1=(int)pow(2.0, m1);
+
+	in1b=(floatComplex *)malloc((unsigned int)(2*m1)*sizeof(float));
+	for(i=0;i<m1;i++){
+		if (i<size1) in1b[i]=in1[i];
+		else in1b[i]=FloatComplex(0,0);
+	}
+	
+	in2b=(floatComplex *)malloc((unsigned int)(2*m1)*sizeof(float));
+	for(i=0;i<m1;i++){
+		if (i<size2) in2b[i]=in2[i];
+		else in2b[i]=FloatComplex(0,0);
+	}
+
+
+
+	cfftma(in1b,m1,1,in1b);	
+
+	cfftma(in2b,m1,1,in2b);
+	result=(floatComplex *)malloc((unsigned int)(2*m1)*sizeof(float));
+	cmula(in1b,in2b,m1,result);
+	cifftma(result,m1,1,result);
+
+	for (i=0;i<size1+size2-1;i++){
+		out[i]=result[i];
+	}
+	
+	free(in1b);
+	free(in2b);
+	free(result);
+}
+
+