Original Version

1 files changed, 54 insertions, 0 deletions

diff --git a/2.3-1/src/c/matrixOperations/dist/cdista.c b/2.3-1/src/c/matrixOperations/dist/cdista.c
new file mode 100644
index 00000000..f9ffd17b
--- /dev/null
+++ b/2.3-1/src/c/matrixOperations/dist/cdista.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"
+
+float cdista(floatComplex* in1,floatComplex* in2, int lines, int columns){
+	int i=0;
+	float out = 0;
+	floatComplex *a, *at, *mul;
+	floatComplex *eigenvalues;
+	
+	
+	/* FIXME : malloc here*/
+	a=(floatComplex*)malloc((unsigned int)(lines*columns)*sizeof(floatComplex));
+	at=(floatComplex*)malloc((unsigned int)(lines*columns)*sizeof(floatComplex));
+	mul=(floatComplex*)malloc((unsigned int)(lines*lines)*sizeof(floatComplex));
+	eigenvalues=(floatComplex*)malloc((unsigned int)(lines)*sizeof(floatComplex));
+		
+	for (i=0;i<lines*columns;i++) a[i]=cdiffs(in1[i],in2[i]);
+	ctransposea(a,lines, columns,at);
+	cconja(at,lines*columns,at);
+	cmulma(a,lines,columns,at,columns,lines,mul);
+	cspeca(mul,lines,eigenvalues);
+	csqrta(eigenvalues,lines,eigenvalues);
+	
+	/* Research of the higher value of eigenvalues*/
+	for (i=0;i<lines;i++){
+		if (creals(eigenvalues[i])>out) out = creals(eigenvalues[i]);
+	}
+		
+	
+	free(a);
+	free(at);
+	free(mul);
+	free(eigenvalues);
+	
+	return out;
+}