Updated - Linear Algebra

1 files changed, 34 insertions, 0 deletions

diff --git a/src/c/matrixOperations/spec/sspeca.c b/src/c/matrixOperations/spec/sspeca.c
new file mode 100644
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--- /dev/null
+++ b/src/c/matrixOperations/spec/sspeca.c
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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
+ *
+ */
+ 
+#include <stdlib.h>
+#include "spec.h"
+
+
+
+void sspeca(float* in, int rows, float* out){
+	/* As we use Lapack to find the eigenvalues, we must cast the float input into double
+	and the doubleComplex output of dspeca into floatComplex*/
+	
+	int i;
+	double* dblin;
+	double* dblout;
+	
+	dblin=(double*)malloc((unsigned int)(rows*rows)*sizeof(double));
+	dblout=(double*)malloc((unsigned int)rows*sizeof(double));
+	
+	for (i=0;i<rows*rows;i++) dblin[i]=(double)in[i];
+	
+	dspeca(dblin,rows,dblout);
+	
+	for (i=0;i<rows;i++) out[i]=(float)dblout[i];
+}