From 362bd2337910fec57d854ebb179772efe552f929 Mon Sep 17 00:00:00 2001
From: Sandeep Gupta
Date: Mon, 19 Jun 2017 17:02:45 +0530
Subject: 19-June-2017

---
 src/c/linearAlgebra/spec/cspeca.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/c/linearAlgebra/spec/cspeca.c

(limited to 'src/c/linearAlgebra/spec/cspeca.c')

diff --git a/src/c/linearAlgebra/spec/cspeca.c b/src/c/linearAlgebra/spec/cspeca.c
new file mode 100644
index 00000000..a2b6548b
--- /dev/null
+++ b/src/c/linearAlgebra/spec/cspeca.c
@@ -0,0 +1,34 @@
+/*
+ *  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 cspeca(floatComplex* in, int rows, floatComplex* out){
+	/* As we use Lapack to find the eigenvalues, we must cast the floatComplex input into doubleComplex
+	and the doubleComplex output of dspeca into floatComplex*/
+	
+	int i;
+	doubleComplex* dblin;
+	doubleComplex* dblout;
+	
+	dblin=(doubleComplex*)malloc((unsigned int)(rows*rows)*sizeof(doubleComplex));
+	dblout=(doubleComplex*)malloc((unsigned int)rows*sizeof(doubleComplex));
+	
+	for (i=0;i<rows*rows;i++) dblin[i]=DoubleComplex((double)creals(in[i]),(double)cimags(in[i]));
+	
+	zspeca(dblin,rows,dblout);
+	
+	for (i=0;i<rows;i++) out[i]=FloatComplex((float)zreals(dblout[i]),(float)zimags(dblout[i]));
+}
-- 
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