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diff --git a/2.3-1/src/c/matrixOperations/includes/spec.h b/2.3-1/src/c/matrixOperations/includes/spec.h
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+++ b/2.3-1/src/c/matrixOperations/includes/spec.h
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+/*
+ *  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
+ *
+ */
+ 
+ 
+#ifndef __SPEC_H__
+#define __SPEC_H__
+
+#include "dynlib_matrixoperations.h"
+#include "doubleComplex.h"
+#include "floatComplex.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* spec gives only the eigenvalues
+   If you want the eigenvalues and the eigenvectors, use spec2 */
+
+/* spec */
+#define sspecs(in) 	in
+#define dspecs(in) 	in
+#define cspecs(in) 	in
+#define zspecs(in) 	in
+
+EXTERN_MATOPS void sspeca(float* in, int rows, float* out);
+EXTERN_MATOPS void dspeca(double* in, int rows, double* out);
+EXTERN_MATOPS void cspeca(floatComplex* in, int rows, floatComplex* out);
+EXTERN_MATOPS void zspeca(doubleComplex* in, int rows,doubleComplex* out);
+
+
+
+/* spec2 */
+#define sspec2s(in,out)  	sspecs(1);*out=in; 
+#define dspec2s(in,out)  	dspecs(1);*out=in; 
+#define cspec2s(in,out)   	cspecs(FloatComplex(1,0));*out=FloatComplex(creals(in),cimags(in)); 
+#define zspec2s(in,out)  	zspecs(DoubleComplex(1,0));*out=DoubleComplex(zreals(in),zimags(in)); 
+
+EXTERN_MATOPS void sspec2a(float* in, int rows, float* eigenvalues,float* eigenvectors);
+EXTERN_MATOPS void dspec2a(double* in, int rows, double* eigenvalues,double* eigenvectors);
+EXTERN_MATOPS void cspec2a(floatComplex* in, int rows, floatComplex* eigenvalues,floatComplex* eigenvectors);
+EXTERN_MATOPS void zspec2a(doubleComplex* in, int rows,doubleComplex* eigenvalues,doubleComplex* eigenvectors);
+
+#ifdef  __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* __SPEC_H__ */