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diff --git a/src/c/matrixOperations/includes/nnz.h b/src/c/matrixOperations/includes/nnz.h
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+++ b/src/c/matrixOperations/includes/nnz.h
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+/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+
+ 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
+ Author: Abhinav Dronamraju
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+ 
+
+#ifndef __NNZ_H__
+#define __NNZ_H__
+
+#include "types.h"
+#include "doubleComplex.h"
+#include "uint16.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+uint16 dnnza(double* , int , int);
+uint16 dnnzs(double);
+uint16 snnza( float* , int , int);
+uint16 snnzs( float);
+uint16 znnza(doubleComplex *, int , int);
+uint16 znnzs(doubleComplex);
+
+
+#ifdef  __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*__NNZ_H__*/