Tagging the 2.0 release of scilab2crelease-2.0

1 files changed, 54 insertions, 0 deletions

diff --git a/src/c/matrixOperations/dist/zdista.c b/src/c/matrixOperations/dist/zdista.c
new file mode 100644
index 00000000..72afa184
--- /dev/null
+++ b/src/c/matrixOperations/dist/zdista.c
@@ -0,0 +1,54 @@
+/*
+ *  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 "dist.h"
+#include "matrixTranspose.h"
+#include "matrixMultiplication.h"
+#include "spec.h"
+#include "sqrt.h"
+#include "conj.h"
+#include "subtraction.h"
+
+double zdista(doubleComplex* in1,doubleComplex* in2, int lines, int columns){
+	int i=0;
+	double out = 0;
+	doubleComplex *a, *at, *mul;
+	doubleComplex *eigenvalues;
+	
+	
+	/* FIXME : malloc here*/
+	a=(doubleComplex*)malloc((unsigned int)(lines*columns)*sizeof(doubleComplex));
+	at=(doubleComplex*)malloc((unsigned int)(lines*columns)*sizeof(doubleComplex));
+	mul=(doubleComplex*)malloc((unsigned int)(lines*lines)*sizeof(doubleComplex));
+	eigenvalues=(doubleComplex*)malloc((unsigned int)(lines)*sizeof(doubleComplex));
+		
+	for (i=0;i<lines*columns;i++) a[i]=zdiffs(in1[i],in2[i]);
+	ztransposea(a,lines, columns,at);
+	zconja(at,lines*columns,at);
+	zmulma(a,lines,columns,at,columns,lines,mul);
+	zspeca(mul,lines,eigenvalues);
+	zsqrta(eigenvalues,lines,eigenvalues);
+	
+	/* Research of the higher value of eigenvalues*/
+	for (i=0;i<lines;i++){
+		if (zreals(eigenvalues[i])>out) out = zreals(eigenvalues[i]);
+	}
+		
+	
+	free(a);
+	free(at);
+	free(mul);
+	free(eigenvalues);
+	
+	return out;
+}