From 277d1edfa17bf3719d90ddbac8e31f6181e952c3 Mon Sep 17 00:00:00 2001
From: Sandeep Gupta
Date: Sun, 18 Jun 2017 23:55:40 +0530
Subject: First commit
---
src/c/matrixOperations/spec2/sspec2a.c | 36 ++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 src/c/matrixOperations/spec2/sspec2a.c
(limited to 'src/c/matrixOperations/spec2/sspec2a.c')
diff --git a/src/c/matrixOperations/spec2/sspec2a.c b/src/c/matrixOperations/spec2/sspec2a.c
new file mode 100644
index 00000000..d3ab00d5
--- /dev/null
+++ b/src/c/matrixOperations/spec2/sspec2a.c
@@ -0,0 +1,36 @@
+/*
+ * 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 sspec2a(float* in, int rows, float* eigenvalues,float* eigenvectors){
+ /* As we use Lapack to find the eigenvalues, we must cast the float input into double
+ and the doubleComplex outputs of dspec2a into floatComplex*/
+
+ int i;
+ double* dblin;
+ double *dbleigenvalues,*dbleigenvectors;
+
+ dblin=(double*)malloc((unsigned int)(rows*rows)*sizeof(double));
+ dbleigenvalues = (double*)malloc((unsigned int)(rows*rows)*sizeof(double));
+ dbleigenvectors = (double*)malloc((unsigned int)(rows*rows)*sizeof(double));
+
+ for (i=0;i<rows*rows;i++) dblin[i]=(double)in[i];
+
+ dspec2a(dblin,rows,dbleigenvalues,dbleigenvectors);
+
+ for (i=0;i<rows*rows;i++) eigenvalues[i]=(float)dbleigenvalues[i];
+ for (i=0;i<rows*rows;i++) eigenvectors[i]=(float)dbleigenvectors[i];
+}
--
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