Original Version

1 files changed, 53 insertions, 0 deletions

diff --git a/src/c/matrixOperations/dist/sdista.c b/src/c/matrixOperations/dist/sdista.c
new file mode 100644
index 0000000..438c390
--- /dev/null
+++ b/src/c/matrixOperations/dist/sdista.c
@@ -0,0 +1,53 @@
+/*
+ *  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"
+
+
+float sdista(float* in1,float* in2, int lines, int columns){
+	int i=0;
+	float out=0;
+	float *a, *at, *mul;
+	floatComplex *eigenvalues,*mulCpx;
+	
+	
+	/* FIXME : malloc here*/
+	a=(float*)malloc((unsigned int)(lines*columns)*sizeof(float));
+	at=(float*)malloc((unsigned int)(lines*columns)*sizeof(float));
+	mul=(float*)malloc((unsigned int)(lines*lines)*sizeof(float));
+	eigenvalues=(floatComplex*)malloc((unsigned int)(lines)*sizeof(floatComplex));
+	mulCpx=(floatComplex*)malloc((unsigned int)(lines*lines)*sizeof(floatComplex));
+		
+	for (i=0;i<lines*columns;i++) a[i]=in1[i]-in2[i];
+	stransposea(a,lines, columns,at);
+	smulma(a,lines,columns,at,columns,lines,mul);
+	for (i=0;i<lines*lines;i++) mulCpx[i]=FloatComplex(mul[i],0);
+	cspeca(mulCpx,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);
+	free(mulCpx);
+	
+	return out;
+}